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Finding the Fourth Proportional to 576,342.20, 864,513.30 and 310,621.70

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Solution

The fourth proportional to 576,342.20, 864,513.30 and 310,621.70 is: 465,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,342.20 : 864,513.30 = 310,621.70 : x
  2. Step 2: Convert to fraction form
    576,342.20/864,513.30 = 310,621.70/x
  3. Step 3: Cross multiply
    576,342.20x = 864,513.30 × 310,621.70
  4. Step 4: Simplify right side
    576,342.20x = 268,536,590,918.61
  5. Step 5: Solve for x
    x = 268,536,590,918.61/576,342.20
  6. Step 6: Final answer
    x = 465,932.55

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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.