Home / 858,033,117.40-1,287,049,676.10-664,322,872.90

Finding the Fourth Proportional to 858,033,117.40, 1,287,049,676.10 and 664,322,872.90

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Solution

The fourth proportional to 858,033,117.40, 1,287,049,676.10 and 664,322,872.90 is: 996,484,309.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,033,117.40 : 1,287,049,676.10 = 664,322,872.90 : x
  2. Step 2: Convert to fraction form
    858,033,117.40/1,287,049,676.10 = 664,322,872.90/x
  3. Step 3: Cross multiply
    858,033,117.40x = 1,287,049,676.10 × 664,322,872.90
  4. Step 4: Simplify right side
    858,033,117.40x = 855,016,538,391,766,400
  5. Step 5: Solve for x
    x = 855,016,538,391,766,400/858,033,117.40
  6. Step 6: Final answer
    x = 996,484,309.35

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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.