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Finding the Fourth Proportional to 576,420.20, 864,630.30 and 541,428.20

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Solution

The fourth proportional to 576,420.20, 864,630.30 and 541,428.20 is: 812,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,420.20 : 864,630.30 = 541,428.20 : x
  2. Step 2: Convert to fraction form
    576,420.20/864,630.30 = 541,428.20/x
  3. Step 3: Cross multiply
    576,420.20x = 864,630.30 × 541,428.20
  4. Step 4: Simplify right side
    576,420.20x = 468,135,226,994.46
  5. Step 5: Solve for x
    x = 468,135,226,994.46/576,420.20
  6. Step 6: Final answer
    x = 812,142.30

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Half scale
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Double scale
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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.