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Finding the Fourth Proportional to 664,632.40, 996,948.60 and 265,334.80

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Solution

The fourth proportional to 664,632.40, 996,948.60 and 265,334.80 is: 398,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,632.40 : 996,948.60 = 265,334.80 : x
  2. Step 2: Convert to fraction form
    664,632.40/996,948.60 = 265,334.80/x
  3. Step 3: Cross multiply
    664,632.40x = 996,948.60 × 265,334.80
  4. Step 4: Simplify right side
    664,632.40x = 264,525,157,391.28
  5. Step 5: Solve for x
    x = 264,525,157,391.28/664,632.40
  6. Step 6: Final answer
    x = 398,002.20

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Similar ratio
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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.