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Finding the Fourth Proportional to 506,118.72, 698,416.56 and 279,750.72

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Solution

The fourth proportional to 506,118.72, 698,416.56 and 279,750.72 is: 386,040.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,118.72 : 698,416.56 = 279,750.72 : x
  2. Step 2: Convert to fraction form
    506,118.72/698,416.56 = 279,750.72/x
  3. Step 3: Cross multiply
    506,118.72x = 698,416.56 × 279,750.72
  4. Step 4: Simplify right side
    506,118.72x = 195,382,535,519.92
  5. Step 5: Solve for x
    x = 195,382,535,519.92/506,118.72
  6. Step 6: Final answer
    x = 386,040.92

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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.