Home / 721,887,427.02-996,205,912.11-391,862,789.58

Finding the Fourth Proportional to 721,887,427.02, 996,205,912.11 and 391,862,789.58

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Solution

The fourth proportional to 721,887,427.02, 996,205,912.11 and 391,862,789.58 is: 540,771,335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,887,427.02 : 996,205,912.11 = 391,862,789.58 : x
  2. Step 2: Convert to fraction form
    721,887,427.02/996,205,912.11 = 391,862,789.58/x
  3. Step 3: Cross multiply
    721,887,427.02x = 996,205,912.11 × 391,862,789.58
  4. Step 4: Simplify right side
    721,887,427.02x = 390,376,027,715,512,896
  5. Step 5: Solve for x
    x = 390,376,027,715,512,896/721,887,427.02
  6. Step 6: Final answer
    x = 540,771,335.12

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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.