Home / 746,441.60-1,120,828.80-431,513.60

Finding the Fourth Proportional to 746,441.60, 1,120,828.80 and 431,513.60

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Solution

The fourth proportional to 746,441.60, 1,120,828.80 and 431,513.60 is: 647,944.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,441.60 : 1,120,828.80 = 431,513.60 : x
  2. Step 2: Convert to fraction form
    746,441.60/1,120,828.80 = 431,513.60/x
  3. Step 3: Cross multiply
    746,441.60x = 1,120,828.80 × 431,513.60
  4. Step 4: Simplify right side
    746,441.60x = 483,652,870,471.68
  5. Step 5: Solve for x
    x = 483,652,870,471.68/746,441.60
  6. Step 6: Final answer
    x = 647,944.69

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Double scale
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Similar ratio
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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.