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Finding the Fourth Proportional to 692,079.76, 955,542.18 and 447,656.86

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Solution

The fourth proportional to 692,079.76, 955,542.18 and 447,656.86 is: 618,071.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,079.76 : 955,542.18 = 447,656.86 : x
  2. Step 2: Convert to fraction form
    692,079.76/955,542.18 = 447,656.86/x
  3. Step 3: Cross multiply
    692,079.76x = 955,542.18 × 447,656.86
  4. Step 4: Simplify right side
    692,079.76x = 427,755,011,896.36
  5. Step 5: Solve for x
    x = 427,755,011,896.36/692,079.76
  6. Step 6: Final answer
    x = 618,071.84

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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.