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Finding the Fourth Proportional to 657,751.66, 907,678.11 and 371,298.40

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Solution

The fourth proportional to 657,751.66, 907,678.11 and 371,298.40 is: 512,380.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,751.66 : 907,678.11 = 371,298.40 : x
  2. Step 2: Convert to fraction form
    657,751.66/907,678.11 = 371,298.40/x
  3. Step 3: Cross multiply
    657,751.66x = 907,678.11 × 371,298.40
  4. Step 4: Simplify right side
    657,751.66x = 337,019,429,958.02
  5. Step 5: Solve for x
    x = 337,019,429,958.02/657,751.66
  6. Step 6: Final answer
    x = 512,380.96

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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.