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Finding the Fourth Proportional to 576,021.40, 864,032.10 and 398,152.60

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Solution

The fourth proportional to 576,021.40, 864,032.10 and 398,152.60 is: 597,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,021.40 : 864,032.10 = 398,152.60 : x
  2. Step 2: Convert to fraction form
    576,021.40/864,032.10 = 398,152.60/x
  3. Step 3: Cross multiply
    576,021.40x = 864,032.10 × 398,152.60
  4. Step 4: Simplify right side
    576,021.40x = 344,016,627,098.46
  5. Step 5: Solve for x
    x = 344,016,627,098.46/576,021.40
  6. Step 6: Final answer
    x = 597,228.90

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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.