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Finding the Fourth Proportional to 643,356.50, 965,034.76 and 440,752.82

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Solution

The fourth proportional to 643,356.50, 965,034.76 and 440,752.82 is: 661,129.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,356.50 : 965,034.76 = 440,752.82 : x
  2. Step 2: Convert to fraction form
    643,356.50/965,034.76 = 440,752.82/x
  3. Step 3: Cross multiply
    643,356.50x = 965,034.76 × 440,752.82
  4. Step 4: Simplify right side
    643,356.50x = 425,341,791,868.02
  5. Step 5: Solve for x
    x = 425,341,791,868.02/643,356.50
  6. Step 6: Final answer
    x = 661,129.24

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.