Home / 642,016.20-964,061.10-484,422.60

Finding the Fourth Proportional to 642,016.20, 964,061.10 and 484,422.60

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Solution

The fourth proportional to 642,016.20, 964,061.10 and 484,422.60 is: 727,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,016.20 : 964,061.10 = 484,422.60 : x
  2. Step 2: Convert to fraction form
    642,016.20/964,061.10 = 484,422.60/x
  3. Step 3: Cross multiply
    642,016.20x = 964,061.10 × 484,422.60
  4. Step 4: Simplify right side
    642,016.20x = 467,012,984,620.86
  5. Step 5: Solve for x
    x = 467,012,984,620.86/642,016.20
  6. Step 6: Final answer
    x = 727,416.20

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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.