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Finding the Fourth Proportional to 576,493.20, 864,739.80 and 256,644.45

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Solution

The fourth proportional to 576,493.20, 864,739.80 and 256,644.45 is: 384,966.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,493.20 : 864,739.80 = 256,644.45 : x
  2. Step 2: Convert to fraction form
    576,493.20/864,739.80 = 256,644.45/x
  3. Step 3: Cross multiply
    576,493.20x = 864,739.80 × 256,644.45
  4. Step 4: Simplify right side
    576,493.20x = 221,930,670,364.11
  5. Step 5: Solve for x
    x = 221,930,670,364.11/576,493.20
  6. Step 6: Final answer
    x = 384,966.68

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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.