Home / 859,734.10-1,287,851.55-439,246.90

Finding the Fourth Proportional to 859,734.10, 1,287,851.55 and 439,246.90

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Solution

The fourth proportional to 859,734.10, 1,287,851.55 and 439,246.90 is: 657,976.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,734.10 : 1,287,851.55 = 439,246.90 : x
  2. Step 2: Convert to fraction form
    859,734.10/1,287,851.55 = 439,246.90/x
  3. Step 3: Cross multiply
    859,734.10x = 1,287,851.55 × 439,246.90
  4. Step 4: Simplify right side
    859,734.10x = 565,684,800,997.70
  5. Step 5: Solve for x
    x = 565,684,800,997.70/859,734.10
  6. Step 6: Final answer
    x = 657,976.46

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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.