Home / 955,455.40-1,318,377.86-547,478.78

Finding the Fourth Proportional to 955,455.40, 1,318,377.86 and 547,478.78

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Solution

The fourth proportional to 955,455.40, 1,318,377.86 and 547,478.78 is: 755,434.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    955,455.40 : 1,318,377.86 = 547,478.78 : x
  2. Step 2: Convert to fraction form
    955,455.40/1,318,377.86 = 547,478.78/x
  3. Step 3: Cross multiply
    955,455.40x = 1,318,377.86 × 547,478.78
  4. Step 4: Simplify right side
    955,455.40x = 721,783,899,634.42
  5. Step 5: Solve for x
    x = 721,783,899,634.42/955,455.40
  6. Step 6: Final answer
    x = 755,434.43

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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.