Home / 665,257.20-997,885.80-455,305.20

Finding the Fourth Proportional to 665,257.20, 997,885.80 and 455,305.20

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Solution

The fourth proportional to 665,257.20, 997,885.80 and 455,305.20 is: 682,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,257.20 : 997,885.80 = 455,305.20 : x
  2. Step 2: Convert to fraction form
    665,257.20/997,885.80 = 455,305.20/x
  3. Step 3: Cross multiply
    665,257.20x = 997,885.80 × 455,305.20
  4. Step 4: Simplify right side
    665,257.20x = 454,342,593,746.16
  5. Step 5: Solve for x
    x = 454,342,593,746.16/665,257.20
  6. Step 6: Final answer
    x = 682,957.80

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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.