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Finding the Fourth Proportional to 657,853.52, 907,861.40 and 371,424.56

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Solution

The fourth proportional to 657,853.52, 907,861.40 and 371,424.56 is: 512,579.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,853.52 : 907,861.40 = 371,424.56 : x
  2. Step 2: Convert to fraction form
    657,853.52/907,861.40 = 371,424.56/x
  3. Step 3: Cross multiply
    657,853.52x = 907,861.40 × 371,424.56
  4. Step 4: Simplify right side
    657,853.52x = 337,202,021,035.98
  5. Step 5: Solve for x
    x = 337,202,021,035.98/657,853.52
  6. Step 6: Final answer
    x = 512,579.18

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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.