Home / 913,520.20-1,368,443.22-513,561.64

Finding the Fourth Proportional to 913,520.20, 1,368,443.22 and 513,561.64

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Solution

The fourth proportional to 913,520.20, 1,368,443.22 and 513,561.64 is: 769,309.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,520.20 : 1,368,443.22 = 513,561.64 : x
  2. Step 2: Convert to fraction form
    913,520.20/1,368,443.22 = 513,561.64/x
  3. Step 3: Cross multiply
    913,520.20x = 1,368,443.22 × 513,561.64
  4. Step 4: Simplify right side
    913,520.20x = 702,779,944,310.08
  5. Step 5: Solve for x
    x = 702,779,944,310.08/913,520.20
  6. Step 6: Final answer
    x = 769,309.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.