Home / 1,397,913,965.28-1,929,162,270.60-762,875,459.76

Finding the Fourth Proportional to 1,397,913,965.28, 1,929,162,270.60 and 762,875,459.76

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Solution

The fourth proportional to 1,397,913,965.28, 1,929,162,270.60 and 762,875,459.76 is: 1,052,790,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,913,965.28 : 1,929,162,270.60 = 762,875,459.76 : x
  2. Step 2: Convert to fraction form
    1,397,913,965.28/1,929,162,270.60 = 762,875,459.76/x
  3. Step 3: Cross multiply
    1,397,913,965.28x = 1,929,162,270.60 × 762,875,459.76
  4. Step 4: Simplify right side
    1,397,913,965.28x = 1,471,710,554,135,620,352
  5. Step 5: Solve for x
    x = 1,471,710,554,135,620,352/1,397,913,965.28
  6. Step 6: Final answer
    x = 1,052,790,508.35

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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.