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Finding the Fourth Proportional to 657,768.96, 907,718.40 and 371,285.76

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Solution

The fourth proportional to 657,768.96, 907,718.40 and 371,285.76 is: 512,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,768.96 : 907,718.40 = 371,285.76 : x
  2. Step 2: Convert to fraction form
    657,768.96/907,718.40 = 371,285.76/x
  3. Step 3: Cross multiply
    657,768.96x = 907,718.40 × 371,285.76
  4. Step 4: Simplify right side
    657,768.96x = 337,022,916,009.98
  5. Step 5: Solve for x
    x = 337,022,916,009.98/657,768.96
  6. Step 6: Final answer
    x = 512,372.79

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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.