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Finding the Fourth Proportional to 657,862.28, 907,871.96 and 403,164.28

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Solution

The fourth proportional to 657,862.28, 907,871.96 and 403,164.28 is: 556,380.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,862.28 : 907,871.96 = 403,164.28 : x
  2. Step 2: Convert to fraction form
    657,862.28/907,871.96 = 403,164.28/x
  3. Step 3: Cross multiply
    657,862.28x = 907,871.96 × 403,164.28
  4. Step 4: Simplify right side
    657,862.28x = 366,021,545,085.59
  5. Step 5: Solve for x
    x = 366,021,545,085.59/657,862.28
  6. Step 6: Final answer
    x = 556,380.20

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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.