Home / 1,120,130,285.70-1,680,195,428.55-1,009,165,404.90

Finding the Fourth Proportional to 1,120,130,285.70, 1,680,195,428.55 and 1,009,165,404.90

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Solution

The fourth proportional to 1,120,130,285.70, 1,680,195,428.55 and 1,009,165,404.90 is: 1,513,748,107.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,130,285.70 : 1,680,195,428.55 = 1,009,165,404.90 : x
  2. Step 2: Convert to fraction form
    1,120,130,285.70/1,680,195,428.55 = 1,009,165,404.90/x
  3. Step 3: Cross multiply
    1,120,130,285.70x = 1,680,195,428.55 × 1,009,165,404.90
  4. Step 4: Simplify right side
    1,120,130,285.70x = 1,695,595,099,963,789,568
  5. Step 5: Solve for x
    x = 1,695,595,099,963,789,568/1,120,130,285.70
  6. Step 6: Final answer
    x = 1,513,748,107.35

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.