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Finding the Fourth Proportional to 502,670.91, 693,668.28 and 276,314.79

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Solution

The fourth proportional to 502,670.91, 693,668.28 and 276,314.79 is: 381,304.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,670.91 : 693,668.28 = 276,314.79 : x
  2. Step 2: Convert to fraction form
    502,670.91/693,668.28 = 276,314.79/x
  3. Step 3: Cross multiply
    502,670.91x = 693,668.28 × 276,314.79
  4. Step 4: Simplify right side
    502,670.91x = 191,670,805,117.86
  5. Step 5: Solve for x
    x = 191,670,805,117.86/502,670.91
  6. Step 6: Final answer
    x = 381,304.75

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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.