Home / 516,442.05-712,573.27-312,487.90

Finding the Fourth Proportional to 516,442.05, 712,573.27 and 312,487.90

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Solution

The fourth proportional to 516,442.05, 712,573.27 and 312,487.90 is: 431,162.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,442.05 : 712,573.27 = 312,487.90 : x
  2. Step 2: Convert to fraction form
    516,442.05/712,573.27 = 312,487.90/x
  3. Step 3: Cross multiply
    516,442.05x = 712,573.27 × 312,487.90
  4. Step 4: Simplify right side
    516,442.05x = 222,670,522,175.78
  5. Step 5: Solve for x
    x = 222,670,522,175.78/516,442.05
  6. Step 6: Final answer
    x = 431,162.65

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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.