Home / 1,129,651,812.52-1,693,507,117.38-392,625,943.72

Finding the Fourth Proportional to 1,129,651,812.52, 1,693,507,117.38 and 392,625,943.72

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Solution

The fourth proportional to 1,129,651,812.52, 1,693,507,117.38 and 392,625,943.72 is: 588,601,569.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,651,812.52 : 1,693,507,117.38 = 392,625,943.72 : x
  2. Step 2: Convert to fraction form
    1,129,651,812.52/1,693,507,117.38 = 392,625,943.72/x
  3. Step 3: Cross multiply
    1,129,651,812.52x = 1,693,507,117.38 × 392,625,943.72
  4. Step 4: Simplify right side
    1,129,651,812.52x = 664,914,830,157,859,456
  5. Step 5: Solve for x
    x = 664,914,830,157,859,456/1,129,651,812.52
  6. Step 6: Final answer
    x = 588,601,569.78

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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.