Home / 791,385.38-1,092,112.79-428,808.95

Finding the Fourth Proportional to 791,385.38, 1,092,112.79 and 428,808.95

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Solution

The fourth proportional to 791,385.38, 1,092,112.79 and 428,808.95 is: 591,756.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,385.38 : 1,092,112.79 = 428,808.95 : x
  2. Step 2: Convert to fraction form
    791,385.38/1,092,112.79 = 428,808.95/x
  3. Step 3: Cross multiply
    791,385.38x = 1,092,112.79 × 428,808.95
  4. Step 4: Simplify right side
    791,385.38x = 468,307,731,156.86
  5. Step 5: Solve for x
    x = 468,307,731,156.86/791,385.38
  6. Step 6: Final answer
    x = 591,756.87

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Double scale
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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.