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Finding the Fourth Proportional to 576,005.40, 864,008.10 and 408,043.80

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Solution

The fourth proportional to 576,005.40, 864,008.10 and 408,043.80 is: 612,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,005.40 : 864,008.10 = 408,043.80 : x
  2. Step 2: Convert to fraction form
    576,005.40/864,008.10 = 408,043.80/x
  3. Step 3: Cross multiply
    576,005.40x = 864,008.10 × 408,043.80
  4. Step 4: Simplify right side
    576,005.40x = 352,553,148,354.78
  5. Step 5: Solve for x
    x = 352,553,148,354.78/576,005.40
  6. Step 6: Final answer
    x = 612,065.70

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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.