Home / 746,631.60-1,121,113.80-431,703.60

Finding the Fourth Proportional to 746,631.60, 1,121,113.80 and 431,703.60

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Solution

The fourth proportional to 746,631.60, 1,121,113.80 and 431,703.60 is: 648,229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,631.60 : 1,121,113.80 = 431,703.60 : x
  2. Step 2: Convert to fraction form
    746,631.60/1,121,113.80 = 431,703.60/x
  3. Step 3: Cross multiply
    746,631.60x = 1,121,113.80 × 431,703.60
  4. Step 4: Simplify right side
    746,631.60x = 483,988,863,469.68
  5. Step 5: Solve for x
    x = 483,988,863,469.68/746,631.60
  6. Step 6: Final answer
    x = 648,229.81

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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.