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Finding the Fourth Proportional to 417,386.44, 624,292.90 and 387,132.92

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Solution

The fourth proportional to 417,386.44, 624,292.90 and 387,132.92 is: 579,042.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,386.44 : 624,292.90 = 387,132.92 : x
  2. Step 2: Convert to fraction form
    417,386.44/624,292.90 = 387,132.92/x
  3. Step 3: Cross multiply
    417,386.44x = 624,292.90 × 387,132.92
  4. Step 4: Simplify right side
    417,386.44x = 241,684,333,312.27
  5. Step 5: Solve for x
    x = 241,684,333,312.27/417,386.44
  6. Step 6: Final answer
    x = 579,042.13

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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.