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Finding the Fourth Proportional to 506,110.72, 698,405.52 and 279,742.72

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Solution

The fourth proportional to 506,110.72, 698,405.52 and 279,742.72 is: 386,029.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,110.72 : 698,405.52 = 279,742.72 : x
  2. Step 2: Convert to fraction form
    506,110.72/698,405.52 = 279,742.72/x
  3. Step 3: Cross multiply
    506,110.72x = 698,405.52 × 279,742.72
  4. Step 4: Simplify right side
    506,110.72x = 195,373,859,827.81
  5. Step 5: Solve for x
    x = 195,373,859,827.81/506,110.72
  6. Step 6: Final answer
    x = 386,029.88

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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.