Home / 1,138,622,990.15-1,708,167,430.80-391,541,735.44

Finding the Fourth Proportional to 1,138,622,990.15, 1,708,167,430.80 and 391,541,735.44

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Solution

The fourth proportional to 1,138,622,990.15, 1,708,167,430.80 and 391,541,735.44 is: 587,392,706.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,622,990.15 : 1,708,167,430.80 = 391,541,735.44 : x
  2. Step 2: Convert to fraction form
    1,138,622,990.15/1,708,167,430.80 = 391,541,735.44/x
  3. Step 3: Cross multiply
    1,138,622,990.15x = 1,708,167,430.80 × 391,541,735.44
  4. Step 4: Simplify right side
    1,138,622,990.15x = 668,818,840,270,053,376
  5. Step 5: Solve for x
    x = 668,818,840,270,053,376/1,138,622,990.15
  6. Step 6: Final answer
    x = 587,392,706.85

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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.