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Finding the Fourth Proportional to 665,143.60, 997,715.40 and 452,567.20

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Solution

The fourth proportional to 665,143.60, 997,715.40 and 452,567.20 is: 678,850.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,143.60 : 997,715.40 = 452,567.20 : x
  2. Step 2: Convert to fraction form
    665,143.60/997,715.40 = 452,567.20/x
  3. Step 3: Cross multiply
    665,143.60x = 997,715.40 × 452,567.20
  4. Step 4: Simplify right side
    665,143.60x = 451,533,264,974.88
  5. Step 5: Solve for x
    x = 451,533,264,974.88/665,143.60
  6. Step 6: Final answer
    x = 678,850.80

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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.