Home / 660,511,800.90-990,767,701.35-442,833,567.30

Finding the Fourth Proportional to 660,511,800.90, 990,767,701.35 and 442,833,567.30

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Solution

The fourth proportional to 660,511,800.90, 990,767,701.35 and 442,833,567.30 is: 664,250,350.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,511,800.90 : 990,767,701.35 = 442,833,567.30 : x
  2. Step 2: Convert to fraction form
    660,511,800.90/990,767,701.35 = 442,833,567.30/x
  3. Step 3: Cross multiply
    660,511,800.90x = 990,767,701.35 × 442,833,567.30
  4. Step 4: Simplify right side
    660,511,800.90x = 438,745,195,554,441,536
  5. Step 5: Solve for x
    x = 438,745,195,554,441,536/660,511,800.90
  6. Step 6: Final answer
    x = 664,250,350.95

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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.