Home / 782,985.18-1,080,483.39-443,455.86

Finding the Fourth Proportional to 782,985.18, 1,080,483.39 and 443,455.86

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Solution

The fourth proportional to 782,985.18, 1,080,483.39 and 443,455.86 is: 611,948.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,985.18 : 1,080,483.39 = 443,455.86 : x
  2. Step 2: Convert to fraction form
    782,985.18/1,080,483.39 = 443,455.86/x
  3. Step 3: Cross multiply
    782,985.18x = 1,080,483.39 × 443,455.86
  4. Step 4: Simplify right side
    782,985.18x = 479,146,690,928.17
  5. Step 5: Solve for x
    x = 479,146,690,928.17/782,985.18
  6. Step 6: Final answer
    x = 611,948.61

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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.