Home / 672,511.10-1,008,766.65-513,078.80

Finding the Fourth Proportional to 672,511.10, 1,008,766.65 and 513,078.80

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Solution

The fourth proportional to 672,511.10, 1,008,766.65 and 513,078.80 is: 769,618.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,511.10 : 1,008,766.65 = 513,078.80 : x
  2. Step 2: Convert to fraction form
    672,511.10/1,008,766.65 = 513,078.80/x
  3. Step 3: Cross multiply
    672,511.10x = 1,008,766.65 × 513,078.80
  4. Step 4: Simplify right side
    672,511.10x = 517,576,782,262.02
  5. Step 5: Solve for x
    x = 517,576,782,262.02/672,511.10
  6. Step 6: Final answer
    x = 769,618.20

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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.