Home / 811,103,679.60-1,216,655,519.40-538,474,446.60

Finding the Fourth Proportional to 811,103,679.60, 1,216,655,519.40 and 538,474,446.60

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Solution

The fourth proportional to 811,103,679.60, 1,216,655,519.40 and 538,474,446.60 is: 807,711,669.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,103,679.60 : 1,216,655,519.40 = 538,474,446.60 : x
  2. Step 2: Convert to fraction form
    811,103,679.60/1,216,655,519.40 = 538,474,446.60/x
  3. Step 3: Cross multiply
    811,103,679.60x = 1,216,655,519.40 × 538,474,446.60
  4. Step 4: Simplify right side
    811,103,679.60x = 655,137,907,511,750,656
  5. Step 5: Solve for x
    x = 655,137,907,511,750,656/811,103,679.60
  6. Step 6: Final answer
    x = 807,711,669.90

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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.