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Finding the Fourth Proportional to 502,494.78, 693,442.80 and 276,140.28

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Solution

The fourth proportional to 502,494.78, 693,442.80 and 276,140.28 is: 381,073.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,494.78 : 693,442.80 = 276,140.28 : x
  2. Step 2: Convert to fraction form
    502,494.78/693,442.80 = 276,140.28/x
  3. Step 3: Cross multiply
    502,494.78x = 693,442.80 × 276,140.28
  4. Step 4: Simplify right side
    502,494.78x = 191,487,488,955.98
  5. Step 5: Solve for x
    x = 191,487,488,955.98/502,494.78
  6. Step 6: Final answer
    x = 381,073.59

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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.