Home / 863,138,679.20-1,293,857,713.20-426,506,753.60

Finding the Fourth Proportional to 863,138,679.20, 1,293,857,713.20 and 426,506,753.60

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Solution

The fourth proportional to 863,138,679.20, 1,293,857,713.20 and 426,506,753.60 is: 639,339,964.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,138,679.20 : 1,293,857,713.20 = 426,506,753.60 : x
  2. Step 2: Convert to fraction form
    863,138,679.20/1,293,857,713.20 = 426,506,753.60/x
  3. Step 3: Cross multiply
    863,138,679.20x = 1,293,857,713.20 × 426,506,753.60
  4. Step 4: Simplify right side
    863,138,679.20x = 551,839,052,877,251,904
  5. Step 5: Solve for x
    x = 551,839,052,877,251,904/863,138,679.20
  6. Step 6: Final answer
    x = 639,339,964.92

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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.