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Finding the Fourth Proportional to 506,052.72, 698,352.96 and 279,698.28

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Solution

The fourth proportional to 506,052.72, 698,352.96 and 279,698.28 is: 385,983.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,052.72 : 698,352.96 = 279,698.28 : x
  2. Step 2: Convert to fraction form
    506,052.72/698,352.96 = 279,698.28/x
  3. Step 3: Cross multiply
    506,052.72x = 698,352.96 × 279,698.28
  4. Step 4: Simplify right side
    506,052.72x = 195,328,121,744.91
  5. Step 5: Solve for x
    x = 195,328,121,744.91/506,052.72
  6. Step 6: Final answer
    x = 385,983.74

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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.