Home / 858,845,458.10-1,288,940,033.55-398,840,626.10

Finding the Fourth Proportional to 858,845,458.10, 1,288,940,033.55 and 398,840,626.10

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Solution

The fourth proportional to 858,845,458.10, 1,288,940,033.55 and 398,840,626.10 is: 598,572,938.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,845,458.10 : 1,288,940,033.55 = 398,840,626.10 : x
  2. Step 2: Convert to fraction form
    858,845,458.10/1,288,940,033.55 = 398,840,626.10/x
  3. Step 3: Cross multiply
    858,845,458.10x = 1,288,940,033.55 × 398,840,626.10
  4. Step 4: Simplify right side
    858,845,458.10x = 514,081,649,986,436,992
  5. Step 5: Solve for x
    x = 514,081,649,986,436,992/858,845,458.10
  6. Step 6: Final answer
    x = 598,572,938.98

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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.