Home / 460,867.20-690,879.60-390,244.56

Finding the Fourth Proportional to 460,867.20, 690,879.60 and 390,244.56

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Solution

The fourth proportional to 460,867.20, 690,879.60 and 390,244.56 is: 585,010.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,867.20 : 690,879.60 = 390,244.56 : x
  2. Step 2: Convert to fraction form
    460,867.20/690,879.60 = 390,244.56/x
  3. Step 3: Cross multiply
    460,867.20x = 690,879.60 × 390,244.56
  4. Step 4: Simplify right side
    460,867.20x = 269,612,005,514.98
  5. Step 5: Solve for x
    x = 269,612,005,514.98/460,867.20
  6. Step 6: Final answer
    x = 585,010.18

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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.