Home / 1,098,791,378.20-1,648,187,067.30-408,555,807.40

Finding the Fourth Proportional to 1,098,791,378.20, 1,648,187,067.30 and 408,555,807.40

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Solution

The fourth proportional to 1,098,791,378.20, 1,648,187,067.30 and 408,555,807.40 is: 612,833,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,791,378.20 : 1,648,187,067.30 = 408,555,807.40 : x
  2. Step 2: Convert to fraction form
    1,098,791,378.20/1,648,187,067.30 = 408,555,807.40/x
  3. Step 3: Cross multiply
    1,098,791,378.20x = 1,648,187,067.30 × 408,555,807.40
  4. Step 4: Simplify right side
    1,098,791,378.20x = 673,376,398,026,989,568
  5. Step 5: Solve for x
    x = 673,376,398,026,989,568/1,098,791,378.20
  6. Step 6: Final answer
    x = 612,833,711.10

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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.