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Finding the Fourth Proportional to 522,248.97, 720,831.78 and 318,412.29

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Solution

The fourth proportional to 522,248.97, 720,831.78 and 318,412.29 is: 439,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,248.97 : 720,831.78 = 318,412.29 : x
  2. Step 2: Convert to fraction form
    522,248.97/720,831.78 = 318,412.29/x
  3. Step 3: Cross multiply
    522,248.97x = 720,831.78 × 318,412.29
  4. Step 4: Simplify right side
    522,248.97x = 229,521,699,345.89
  5. Step 5: Solve for x
    x = 229,521,699,345.89/522,248.97
  6. Step 6: Final answer
    x = 439,487.13

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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.