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Finding the Fourth Proportional to 554,432.20, 831,648.30 and 512,441.80

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Solution

The fourth proportional to 554,432.20, 831,648.30 and 512,441.80 is: 768,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,432.20 : 831,648.30 = 512,441.80 : x
  2. Step 2: Convert to fraction form
    554,432.20/831,648.30 = 512,441.80/x
  3. Step 3: Cross multiply
    554,432.20x = 831,648.30 × 512,441.80
  4. Step 4: Simplify right side
    554,432.20x = 426,171,351,818.94
  5. Step 5: Solve for x
    x = 426,171,351,818.94/554,432.20
  6. Step 6: Final answer
    x = 768,662.70

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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.