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Finding the Fourth Proportional to 440,000.80, 660,260.40 and 290,672.80

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Solution

The fourth proportional to 440,000.80, 660,260.40 and 290,672.80 is: 436,180.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,000.80 : 660,260.40 = 290,672.80 : x
  2. Step 2: Convert to fraction form
    440,000.80/660,260.40 = 290,672.80/x
  3. Step 3: Cross multiply
    440,000.80x = 660,260.40 × 290,672.80
  4. Step 4: Simplify right side
    440,000.80x = 191,919,739,197.12
  5. Step 5: Solve for x
    x = 191,919,739,197.12/440,000.80
  6. Step 6: Final answer
    x = 436,180.43

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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.