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Finding the Fourth Proportional to 657,859.10, 907,845.42 and 371,379.18

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Solution

The fourth proportional to 657,859.10, 907,845.42 and 371,379.18 is: 512,503.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,859.10 : 907,845.42 = 371,379.18 : x
  2. Step 2: Convert to fraction form
    657,859.10/907,845.42 = 371,379.18/x
  3. Step 3: Cross multiply
    657,859.10x = 907,845.42 × 371,379.18
  4. Step 4: Simplify right side
    657,859.10x = 337,154,887,646.36
  5. Step 5: Solve for x
    x = 337,154,887,646.36/657,859.10
  6. Step 6: Final answer
    x = 512,503.19

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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.