Home / 1,231,902.72-1,847,920.32-390,520.08

Finding the Fourth Proportional to 1,231,902.72, 1,847,920.32 and 390,520.08

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Solution

The fourth proportional to 1,231,902.72, 1,847,920.32 and 390,520.08 is: 585,801.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,902.72 : 1,847,920.32 = 390,520.08 : x
  2. Step 2: Convert to fraction form
    1,231,902.72/1,847,920.32 = 390,520.08/x
  3. Step 3: Cross multiply
    1,231,902.72x = 1,847,920.32 × 390,520.08
  4. Step 4: Simplify right side
    1,231,902.72x = 721,649,991,200.03
  5. Step 5: Solve for x
    x = 721,649,991,200.03/1,231,902.72
  6. Step 6: Final answer
    x = 585,801.12

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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.