Home / 838,873,866.39-1,157,655,013.61-462,531,182.37

Finding the Fourth Proportional to 838,873,866.39, 1,157,655,013.61 and 462,531,182.37

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Solution

The fourth proportional to 838,873,866.39, 1,157,655,013.61 and 462,531,182.37 is: 638,298,037.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,873,866.39 : 1,157,655,013.61 = 462,531,182.37 : x
  2. Step 2: Convert to fraction form
    838,873,866.39/1,157,655,013.61 = 462,531,182.37/x
  3. Step 3: Cross multiply
    838,873,866.39x = 1,157,655,013.61 × 462,531,182.37
  4. Step 4: Simplify right side
    838,873,866.39x = 535,451,542,221,591,680
  5. Step 5: Solve for x
    x = 535,451,542,221,591,680/838,873,866.39
  6. Step 6: Final answer
    x = 638,298,037.02

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1.5x scale

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.