Home / 721,686.43-1,081,815.22-341,935.75

Finding the Fourth Proportional to 721,686.43, 1,081,815.22 and 341,935.75

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Solution

The fourth proportional to 721,686.43, 1,081,815.22 and 341,935.75 is: 512,565.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,686.43 : 1,081,815.22 = 341,935.75 : x
  2. Step 2: Convert to fraction form
    721,686.43/1,081,815.22 = 341,935.75/x
  3. Step 3: Cross multiply
    721,686.43x = 1,081,815.22 × 341,935.75
  4. Step 4: Simplify right side
    721,686.43x = 369,911,298,612.12
  5. Step 5: Solve for x
    x = 369,911,298,612.12/721,686.43
  6. Step 6: Final answer
    x = 512,565.13

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1.5x scale

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.