Home / 1,123,404.80-1,685,107.20-324,712.40

Finding the Fourth Proportional to 1,123,404.80, 1,685,107.20 and 324,712.40

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Solution

The fourth proportional to 1,123,404.80, 1,685,107.20 and 324,712.40 is: 487,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,404.80 : 1,685,107.20 = 324,712.40 : x
  2. Step 2: Convert to fraction form
    1,123,404.80/1,685,107.20 = 324,712.40/x
  3. Step 3: Cross multiply
    1,123,404.80x = 1,685,107.20 × 324,712.40
  4. Step 4: Simplify right side
    1,123,404.80x = 547,175,203,169.28
  5. Step 5: Solve for x
    x = 547,175,203,169.28/1,123,404.80
  6. Step 6: Final answer
    x = 487,068.60

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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.