Home / 717,942,046.98-990,836,180.52-420,833,919.78

Finding the Fourth Proportional to 717,942,046.98, 990,836,180.52 and 420,833,919.78

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Solution

The fourth proportional to 717,942,046.98, 990,836,180.52 and 420,833,919.78 is: 580,795,449.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,942,046.98 : 990,836,180.52 = 420,833,919.78 : x
  2. Step 2: Convert to fraction form
    717,942,046.98/990,836,180.52 = 420,833,919.78/x
  3. Step 3: Cross multiply
    717,942,046.98x = 990,836,180.52 × 420,833,919.78
  4. Step 4: Simplify right side
    717,942,046.98x = 416,977,473,708,075,264
  5. Step 5: Solve for x
    x = 416,977,473,708,075,264/717,942,046.98
  6. Step 6: Final answer
    x = 580,795,449.25

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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.