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Finding the Fourth Proportional to 665,337.60, 998,006.40 and 488,190.60

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Solution

The fourth proportional to 665,337.60, 998,006.40 and 488,190.60 is: 732,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,337.60 : 998,006.40 = 488,190.60 : x
  2. Step 2: Convert to fraction form
    665,337.60/998,006.40 = 488,190.60/x
  3. Step 3: Cross multiply
    665,337.60x = 998,006.40 × 488,190.60
  4. Step 4: Simplify right side
    665,337.60x = 487,217,343,219.84
  5. Step 5: Solve for x
    x = 487,217,343,219.84/665,337.60
  6. Step 6: Final answer
    x = 732,285.90

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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.