Home / 738,381.90-1,107,572.85-402,458.70

Finding the Fourth Proportional to 738,381.90, 1,107,572.85 and 402,458.70

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Solution

The fourth proportional to 738,381.90, 1,107,572.85 and 402,458.70 is: 603,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,381.90 : 1,107,572.85 = 402,458.70 : x
  2. Step 2: Convert to fraction form
    738,381.90/1,107,572.85 = 402,458.70/x
  3. Step 3: Cross multiply
    738,381.90x = 1,107,572.85 × 402,458.70
  4. Step 4: Simplify right side
    738,381.90x = 445,752,329,366.30
  5. Step 5: Solve for x
    x = 445,752,329,366.30/738,381.90
  6. Step 6: Final answer
    x = 603,688.05

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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.