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Finding the Fourth Proportional to 657,791.69, 907,752.52 and 355,985.69

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Solution

The fourth proportional to 657,791.69, 907,752.52 and 355,985.69 is: 491,260.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,791.69 : 907,752.52 = 355,985.69 : x
  2. Step 2: Convert to fraction form
    657,791.69/907,752.52 = 355,985.69/x
  3. Step 3: Cross multiply
    657,791.69x = 907,752.52 × 355,985.69
  4. Step 4: Simplify right side
    657,791.69x = 323,146,905,640.71
  5. Step 5: Solve for x
    x = 323,146,905,640.71/657,791.69
  6. Step 6: Final answer
    x = 491,260.24

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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.