Home / 742,423.54-1,024,545.14-402,891.78

Finding the Fourth Proportional to 742,423.54, 1,024,545.14 and 402,891.78

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Solution

The fourth proportional to 742,423.54, 1,024,545.14 and 402,891.78 is: 555,991.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,423.54 : 1,024,545.14 = 402,891.78 : x
  2. Step 2: Convert to fraction form
    742,423.54/1,024,545.14 = 402,891.78/x
  3. Step 3: Cross multiply
    742,423.54x = 1,024,545.14 × 402,891.78
  4. Step 4: Simplify right side
    742,423.54x = 412,780,815,144.95
  5. Step 5: Solve for x
    x = 412,780,815,144.95/742,423.54
  6. Step 6: Final answer
    x = 555,991.01

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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.