Home / 991,420,787.52-1,368,178,279.20-551,387,833.92

Finding the Fourth Proportional to 991,420,787.52, 1,368,178,279.20 and 551,387,833.92

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Solution

The fourth proportional to 991,420,787.52, 1,368,178,279.20 and 551,387,833.92 is: 760,924,995.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,420,787.52 : 1,368,178,279.20 = 551,387,833.92 : x
  2. Step 2: Convert to fraction form
    991,420,787.52/1,368,178,279.20 = 551,387,833.92/x
  3. Step 3: Cross multiply
    991,420,787.52x = 1,368,178,279.20 × 551,387,833.92
  4. Step 4: Simplify right side
    991,420,787.52x = 754,396,857,784,480,896
  5. Step 5: Solve for x
    x = 754,396,857,784,480,896/991,420,787.52
  6. Step 6: Final answer
    x = 760,924,995.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.