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Finding the Fourth Proportional to 657,763.88, 907,717.06 and 355,957.96

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Solution

The fourth proportional to 657,763.88, 907,717.06 and 355,957.96 is: 491,223.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,763.88 : 907,717.06 = 355,957.96 : x
  2. Step 2: Convert to fraction form
    657,763.88/907,717.06 = 355,957.96/x
  3. Step 3: Cross multiply
    657,763.88x = 907,717.06 × 355,957.96
  4. Step 4: Simplify right side
    657,763.88x = 323,109,112,934.80
  5. Step 5: Solve for x
    x = 323,109,112,934.80/657,763.88
  6. Step 6: Final answer
    x = 491,223.56

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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.