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Finding the Fourth Proportional to 517,003.38, 713,452.14 and 287,559.90

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Solution

The fourth proportional to 517,003.38, 713,452.14 and 287,559.90 is: 396,825.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,003.38 : 713,452.14 = 287,559.90 : x
  2. Step 2: Convert to fraction form
    517,003.38/713,452.14 = 287,559.90/x
  3. Step 3: Cross multiply
    517,003.38x = 713,452.14 × 287,559.90
  4. Step 4: Simplify right side
    517,003.38x = 205,160,226,033.19
  5. Step 5: Solve for x
    x = 205,160,226,033.19/517,003.38
  6. Step 6: Final answer
    x = 396,825.70

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1.5x scale

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.