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Finding the Fourth Proportional to 547,620.60, 819,818.10 and 407,998.20

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Solution

The fourth proportional to 547,620.60, 819,818.10 and 407,998.20 is: 610,795.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,620.60 : 819,818.10 = 407,998.20 : x
  2. Step 2: Convert to fraction form
    547,620.60/819,818.10 = 407,998.20/x
  3. Step 3: Cross multiply
    547,620.60x = 819,818.10 × 407,998.20
  4. Step 4: Simplify right side
    547,620.60x = 334,484,309,127.42
  5. Step 5: Solve for x
    x = 334,484,309,127.42/547,620.60
  6. Step 6: Final answer
    x = 610,795.70

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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.