Home / 1,120,130,289.20-1,680,195,433.80-1,009,165,408.40

Finding the Fourth Proportional to 1,120,130,289.20, 1,680,195,433.80 and 1,009,165,408.40

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Solution

The fourth proportional to 1,120,130,289.20, 1,680,195,433.80 and 1,009,165,408.40 is: 1,513,748,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,130,289.20 : 1,680,195,433.80 = 1,009,165,408.40 : x
  2. Step 2: Convert to fraction form
    1,120,130,289.20/1,680,195,433.80 = 1,009,165,408.40/x
  3. Step 3: Cross multiply
    1,120,130,289.20x = 1,680,195,433.80 × 1,009,165,408.40
  4. Step 4: Simplify right side
    1,120,130,289.20x = 1,695,595,111,142,592,000
  5. Step 5: Solve for x
    x = 1,695,595,111,142,592,000/1,120,130,289.20
  6. Step 6: Final answer
    x = 1,513,748,112.60

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Double scale
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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.