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Finding the Fourth Proportional to 657,612.47, 907,486.84 and 371,159.21

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Solution

The fourth proportional to 657,612.47, 907,486.84 and 371,159.21 is: 512,189.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,612.47 : 907,486.84 = 371,159.21 : x
  2. Step 2: Convert to fraction form
    657,612.47/907,486.84 = 371,159.21/x
  3. Step 3: Cross multiply
    657,612.47x = 907,486.84 × 371,159.21
  4. Step 4: Simplify right side
    657,612.47x = 336,822,101,352.46
  5. Step 5: Solve for x
    x = 336,822,101,352.46/657,612.47
  6. Step 6: Final answer
    x = 512,189.34

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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.