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Finding the Fourth Proportional to 666,691.49, 920,027.25 and 360,761.19

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Solution

The fourth proportional to 666,691.49, 920,027.25 and 360,761.19 is: 497,846.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,691.49 : 920,027.25 = 360,761.19 : x
  2. Step 2: Convert to fraction form
    666,691.49/920,027.25 = 360,761.19/x
  3. Step 3: Cross multiply
    666,691.49x = 920,027.25 × 360,761.19
  4. Step 4: Simplify right side
    666,691.49x = 331,910,125,542.43
  5. Step 5: Solve for x
    x = 331,910,125,542.43/666,691.49
  6. Step 6: Final answer
    x = 497,846.65

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1.5x scale

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.