Home / 639,037,627.43-881,722,159.13-388,135,031.11

Finding the Fourth Proportional to 639,037,627.43, 881,722,159.13 and 388,135,031.11

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Solution

The fourth proportional to 639,037,627.43, 881,722,159.13 and 388,135,031.11 is: 535,535,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,037,627.43 : 881,722,159.13 = 388,135,031.11 : x
  2. Step 2: Convert to fraction form
    639,037,627.43/881,722,159.13 = 388,135,031.11/x
  3. Step 3: Cross multiply
    639,037,627.43x = 881,722,159.13 × 388,135,031.11
  4. Step 4: Simplify right side
    639,037,627.43x = 342,227,257,661,970,432
  5. Step 5: Solve for x
    x = 342,227,257,661,970,432/639,037,627.43
  6. Step 6: Final answer
    x = 535,535,378.47

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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.