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Finding the Fourth Proportional to 665,087.10, 997,630.65 and 452,510.70

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Solution

The fourth proportional to 665,087.10, 997,630.65 and 452,510.70 is: 678,766.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,087.10 : 997,630.65 = 452,510.70 : x
  2. Step 2: Convert to fraction form
    665,087.10/997,630.65 = 452,510.70/x
  3. Step 3: Cross multiply
    665,087.10x = 997,630.65 × 452,510.70
  4. Step 4: Simplify right side
    665,087.10x = 451,438,543,772.96
  5. Step 5: Solve for x
    x = 451,438,543,772.96/665,087.10
  6. Step 6: Final answer
    x = 678,766.05

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Double scale
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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.