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Finding the Fourth Proportional to 485,324.40, 727,986.60 and 454,220.40

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Solution

The fourth proportional to 485,324.40, 727,986.60 and 454,220.40 is: 681,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,324.40 : 727,986.60 = 454,220.40 : x
  2. Step 2: Convert to fraction form
    485,324.40/727,986.60 = 454,220.40/x
  3. Step 3: Cross multiply
    485,324.40x = 727,986.60 × 454,220.40
  4. Step 4: Simplify right side
    485,324.40x = 330,666,364,646.64
  5. Step 5: Solve for x
    x = 330,666,364,646.64/485,324.40
  6. Step 6: Final answer
    x = 681,330.60

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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.