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Finding the Fourth Proportional to 800,819,581.20, 1,200,791,469.13 and 635,882,591.06

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Solution

The fourth proportional to 800,819,581.20, 1,200,791,469.13 and 635,882,591.06 is: 953,476,174.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,819,581.20 : 1,200,791,469.13 = 635,882,591.06 : x
  2. Step 2: Convert to fraction form
    800,819,581.20/1,200,791,469.13 = 635,882,591.06/x
  3. Step 3: Cross multiply
    800,819,581.20x = 1,200,791,469.13 × 635,882,591.06
  4. Step 4: Simplify right side
    800,819,581.20x = 763,562,390,712,989,952
  5. Step 5: Solve for x
    x = 763,562,390,712,989,952/800,819,581.20
  6. Step 6: Final answer
    x = 953,476,174.45

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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.