Home / 985,990.42-1,479,149.22-346,128.29

Finding the Fourth Proportional to 985,990.42, 1,479,149.22 and 346,128.29

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Solution

The fourth proportional to 985,990.42, 1,479,149.22 and 346,128.29 is: 519,249.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,990.42 : 1,479,149.22 = 346,128.29 : x
  2. Step 2: Convert to fraction form
    985,990.42/1,479,149.22 = 346,128.29/x
  3. Step 3: Cross multiply
    985,990.42x = 1,479,149.22 × 346,128.29
  4. Step 4: Simplify right side
    985,990.42x = 511,975,381,047.05
  5. Step 5: Solve for x
    x = 511,975,381,047.05/985,990.42
  6. Step 6: Final answer
    x = 519,249.85

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Double scale
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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.