Home / 781,536.64-1,172,140.88-220,439.92

Finding the Fourth Proportional to 781,536.64, 1,172,140.88 and 220,439.92

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Solution

The fourth proportional to 781,536.64, 1,172,140.88 and 220,439.92 is: 330,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,536.64 : 1,172,140.88 = 220,439.92 : x
  2. Step 2: Convert to fraction form
    781,536.64/1,172,140.88 = 220,439.92/x
  3. Step 3: Cross multiply
    781,536.64x = 1,172,140.88 × 220,439.92
  4. Step 4: Simplify right side
    781,536.64x = 258,386,641,815.93
  5. Step 5: Solve for x
    x = 258,386,641,815.93/781,536.64
  6. Step 6: Final answer
    x = 330,613.60

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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.