Home / 738,935.92-1,019,732.30-399,404.20

Finding the Fourth Proportional to 738,935.92, 1,019,732.30 and 399,404.20

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Solution

The fourth proportional to 738,935.92, 1,019,732.30 and 399,404.20 is: 551,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,935.92 : 1,019,732.30 = 399,404.20 : x
  2. Step 2: Convert to fraction form
    738,935.92/1,019,732.30 = 399,404.20/x
  3. Step 3: Cross multiply
    738,935.92x = 1,019,732.30 × 399,404.20
  4. Step 4: Simplify right side
    738,935.92x = 407,285,363,495.66
  5. Step 5: Solve for x
    x = 407,285,363,495.66/738,935.92
  6. Step 6: Final answer
    x = 551,178.19

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.