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Finding the Fourth Proportional to 665,602.70, 998,404.05 and 547,504.70

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Solution

The fourth proportional to 665,602.70, 998,404.05 and 547,504.70 is: 821,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,602.70 : 998,404.05 = 547,504.70 : x
  2. Step 2: Convert to fraction form
    665,602.70/998,404.05 = 547,504.70/x
  3. Step 3: Cross multiply
    665,602.70x = 998,404.05 × 547,504.70
  4. Step 4: Simplify right side
    665,602.70x = 546,630,909,874.04
  5. Step 5: Solve for x
    x = 546,630,909,874.04/665,602.70
  6. Step 6: Final answer
    x = 821,257.05

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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.