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Finding the Fourth Proportional to 539,665.74, 744,739.79 and 297,948.78

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Solution

The fourth proportional to 539,665.74, 744,739.79 and 297,948.78 is: 411,169.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,665.74 : 744,739.79 = 297,948.78 : x
  2. Step 2: Convert to fraction form
    539,665.74/744,739.79 = 297,948.78/x
  3. Step 3: Cross multiply
    539,665.74x = 744,739.79 × 297,948.78
  4. Step 4: Simplify right side
    539,665.74x = 221,894,310,358.21
  5. Step 5: Solve for x
    x = 221,894,310,358.21/539,665.74
  6. Step 6: Final answer
    x = 411,169.90

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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.