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Finding the Fourth Proportional to 687,690.95, 949,162.05 and 524,770.79

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Solution

The fourth proportional to 687,690.95, 949,162.05 and 524,770.79 is: 724,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,690.95 : 949,162.05 = 524,770.79 : x
  2. Step 2: Convert to fraction form
    687,690.95/949,162.05 = 524,770.79/x
  3. Step 3: Cross multiply
    687,690.95x = 949,162.05 × 524,770.79
  4. Step 4: Simplify right side
    687,690.95x = 498,092,514,070.71
  5. Step 5: Solve for x
    x = 498,092,514,070.71/687,690.95
  6. Step 6: Final answer
    x = 724,297.04

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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.