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Finding the Fourth Proportional to 638,604,065.80, 957,906,098.70 and 365,750,446.60

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Solution

The fourth proportional to 638,604,065.80, 957,906,098.70 and 365,750,446.60 is: 548,625,669.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,604,065.80 : 957,906,098.70 = 365,750,446.60 : x
  2. Step 2: Convert to fraction form
    638,604,065.80/957,906,098.70 = 365,750,446.60/x
  3. Step 3: Cross multiply
    638,604,065.80x = 957,906,098.70 × 365,750,446.60
  4. Step 4: Simplify right side
    638,604,065.80x = 350,354,583,400,388,736
  5. Step 5: Solve for x
    x = 350,354,583,400,388,736/638,604,065.80
  6. Step 6: Final answer
    x = 548,625,669.90

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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.