Home / 721,777,186.56-996,053,254.65-391,752,393.60

Finding the Fourth Proportional to 721,777,186.56, 996,053,254.65 and 391,752,393.60

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Solution

The fourth proportional to 721,777,186.56, 996,053,254.65 and 391,752,393.60 is: 540,618,703.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,777,186.56 : 996,053,254.65 = 391,752,393.60 : x
  2. Step 2: Convert to fraction form
    721,777,186.56/996,053,254.65 = 391,752,393.60/x
  3. Step 3: Cross multiply
    721,777,186.56x = 996,053,254.65 × 391,752,393.60
  4. Step 4: Simplify right side
    721,777,186.56x = 390,206,246,662,207,872
  5. Step 5: Solve for x
    x = 390,206,246,662,207,872/721,777,186.56
  6. Step 6: Final answer
    x = 540,618,703.29

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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.