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Finding the Fourth Proportional to 657,856.72, 907,791.60 and 371,405.08

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Solution

The fourth proportional to 657,856.72, 907,791.60 and 371,405.08 is: 512,510.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,856.72 : 907,791.60 = 371,405.08 : x
  2. Step 2: Convert to fraction form
    657,856.72/907,791.60 = 371,405.08/x
  3. Step 3: Cross multiply
    657,856.72x = 907,791.60 × 371,405.08
  4. Step 4: Simplify right side
    657,856.72x = 337,158,411,821.33
  5. Step 5: Solve for x
    x = 337,158,411,821.33/657,856.72
  6. Step 6: Final answer
    x = 512,510.40

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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.