Home / 678,267.60-1,017,401.40-639,560.40

Finding the Fourth Proportional to 678,267.60, 1,017,401.40 and 639,560.40

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Solution

The fourth proportional to 678,267.60, 1,017,401.40 and 639,560.40 is: 959,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,267.60 : 1,017,401.40 = 639,560.40 : x
  2. Step 2: Convert to fraction form
    678,267.60/1,017,401.40 = 639,560.40/x
  3. Step 3: Cross multiply
    678,267.60x = 1,017,401.40 × 639,560.40
  4. Step 4: Simplify right side
    678,267.60x = 650,689,646,344.56
  5. Step 5: Solve for x
    x = 650,689,646,344.56/678,267.60
  6. Step 6: Final answer
    x = 959,340.60

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Similar ratio
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1.5x scale

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.