Home / 452,000.20-678,000.30-401,261.80

Finding the Fourth Proportional to 452,000.20, 678,000.30 and 401,261.80

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Solution

The fourth proportional to 452,000.20, 678,000.30 and 401,261.80 is: 601,892.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,000.20 : 678,000.30 = 401,261.80 : x
  2. Step 2: Convert to fraction form
    452,000.20/678,000.30 = 401,261.80/x
  3. Step 3: Cross multiply
    452,000.20x = 678,000.30 × 401,261.80
  4. Step 4: Simplify right side
    452,000.20x = 272,055,620,778.54
  5. Step 5: Solve for x
    x = 272,055,620,778.54/452,000.20
  6. Step 6: Final answer
    x = 601,892.70

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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.