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Finding the Fourth Proportional to 657,122.94, 906,809.31 and 370,638.90

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Solution

The fourth proportional to 657,122.94, 906,809.31 and 370,638.90 is: 511,470.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,122.94 : 906,809.31 = 370,638.90 : x
  2. Step 2: Convert to fraction form
    657,122.94/906,809.31 = 370,638.90/x
  3. Step 3: Cross multiply
    657,122.94x = 906,809.31 × 370,638.90
  4. Step 4: Simplify right side
    657,122.94x = 336,098,805,168.16
  5. Step 5: Solve for x
    x = 336,098,805,168.16/657,122.94
  6. Step 6: Final answer
    x = 511,470.21

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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.