Home / 680,412.60-1,020,618.90-231,640.20

Finding the Fourth Proportional to 680,412.60, 1,020,618.90 and 231,640.20

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Solution

The fourth proportional to 680,412.60, 1,020,618.90 and 231,640.20 is: 347,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,412.60 : 1,020,618.90 = 231,640.20 : x
  2. Step 2: Convert to fraction form
    680,412.60/1,020,618.90 = 231,640.20/x
  3. Step 3: Cross multiply
    680,412.60x = 1,020,618.90 × 231,640.20
  4. Step 4: Simplify right side
    680,412.60x = 236,416,366,119.78
  5. Step 5: Solve for x
    x = 236,416,366,119.78/680,412.60
  6. Step 6: Final answer
    x = 347,460.30

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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.