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Finding the Fourth Proportional to 659,680,871.70, 988,891,451.55 and 245,046,666.90

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Solution

The fourth proportional to 659,680,871.70, 988,891,451.55 and 245,046,666.90 is: 367,336,032.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,680,871.70 : 988,891,451.55 = 245,046,666.90 : x
  2. Step 2: Convert to fraction form
    659,680,871.70/988,891,451.55 = 245,046,666.90/x
  3. Step 3: Cross multiply
    659,680,871.70x = 988,891,451.55 × 245,046,666.90
  4. Step 4: Simplify right side
    659,680,871.70x = 242,324,554,128,230,336
  5. Step 5: Solve for x
    x = 242,324,554,128,230,336/659,680,871.70
  6. Step 6: Final answer
    x = 367,336,032.50

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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.