Home / 746,630.40-1,119,945.60-409,540.80

Finding the Fourth Proportional to 746,630.40, 1,119,945.60 and 409,540.80

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Solution

The fourth proportional to 746,630.40, 1,119,945.60 and 409,540.80 is: 614,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,630.40 : 1,119,945.60 = 409,540.80 : x
  2. Step 2: Convert to fraction form
    746,630.40/1,119,945.60 = 409,540.80/x
  3. Step 3: Cross multiply
    746,630.40x = 1,119,945.60 × 409,540.80
  4. Step 4: Simplify right side
    746,630.40x = 458,663,416,980.48
  5. Step 5: Solve for x
    x = 458,663,416,980.48/746,630.40
  6. Step 6: Final answer
    x = 614,311.20

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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.