Home / 758,651.25-1,138,146.36-285,340.71

Finding the Fourth Proportional to 758,651.25, 1,138,146.36 and 285,340.71

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Solution

The fourth proportional to 758,651.25, 1,138,146.36 and 285,340.71 is: 428,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,651.25 : 1,138,146.36 = 285,340.71 : x
  2. Step 2: Convert to fraction form
    758,651.25/1,138,146.36 = 285,340.71/x
  3. Step 3: Cross multiply
    758,651.25x = 1,138,146.36 × 285,340.71
  4. Step 4: Simplify right side
    758,651.25x = 324,759,490,446.32
  5. Step 5: Solve for x
    x = 324,759,490,446.32/758,651.25
  6. Step 6: Final answer
    x = 428,074.81

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1.5x scale

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.