Home / 709,489.20-1,064,233.80-330,409.20

Finding the Fourth Proportional to 709,489.20, 1,064,233.80 and 330,409.20

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Solution

The fourth proportional to 709,489.20, 1,064,233.80 and 330,409.20 is: 495,613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,489.20 : 1,064,233.80 = 330,409.20 : x
  2. Step 2: Convert to fraction form
    709,489.20/1,064,233.80 = 330,409.20/x
  3. Step 3: Cross multiply
    709,489.20x = 1,064,233.80 × 330,409.20
  4. Step 4: Simplify right side
    709,489.20x = 351,632,638,470.96
  5. Step 5: Solve for x
    x = 351,632,638,470.96/709,489.20
  6. Step 6: Final answer
    x = 495,613.80

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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.