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Finding the Fourth Proportional to 692,660.89, 955,862.68 and 386,741.98

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Solution

The fourth proportional to 692,660.89, 955,862.68 and 386,741.98 is: 533,698.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,660.89 : 955,862.68 = 386,741.98 : x
  2. Step 2: Convert to fraction form
    692,660.89/955,862.68 = 386,741.98/x
  3. Step 3: Cross multiply
    692,660.89x = 955,862.68 × 386,741.98
  4. Step 4: Simplify right side
    692,660.89x = 369,672,218,758.28
  5. Step 5: Solve for x
    x = 369,672,218,758.28/692,660.89
  6. Step 6: Final answer
    x = 533,698.71

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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.