Home / 554,414.20-831,621.30-512,423.80

Finding the Fourth Proportional to 554,414.20, 831,621.30 and 512,423.80

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Solution

The fourth proportional to 554,414.20, 831,621.30 and 512,423.80 is: 768,635.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,414.20 : 831,621.30 = 512,423.80 : x
  2. Step 2: Convert to fraction form
    554,414.20/831,621.30 = 512,423.80/x
  3. Step 3: Cross multiply
    554,414.20x = 831,621.30 × 512,423.80
  4. Step 4: Simplify right side
    554,414.20x = 426,142,546,706.94
  5. Step 5: Solve for x
    x = 426,142,546,706.94/554,414.20
  6. Step 6: Final answer
    x = 768,635.70

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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.