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Finding the Fourth Proportional to 502,663.05, 693,443.84 and 445,360.82

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Solution

The fourth proportional to 502,663.05, 693,443.84 and 445,360.82 is: 614,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,663.05 : 693,443.84 = 445,360.82 : x
  2. Step 2: Convert to fraction form
    502,663.05/693,443.84 = 445,360.82/x
  3. Step 3: Cross multiply
    502,663.05x = 693,443.84 × 445,360.82
  4. Step 4: Simplify right side
    502,663.05x = 308,832,711,512.33
  5. Step 5: Solve for x
    x = 308,832,711,512.33/502,663.05
  6. Step 6: Final answer
    x = 614,393.10

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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.