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Finding the Fourth Proportional to 440,431.40, 660,647.10 and 372,002.60

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Solution

The fourth proportional to 440,431.40, 660,647.10 and 372,002.60 is: 558,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,431.40 : 660,647.10 = 372,002.60 : x
  2. Step 2: Convert to fraction form
    440,431.40/660,647.10 = 372,002.60/x
  3. Step 3: Cross multiply
    440,431.40x = 660,647.10 × 372,002.60
  4. Step 4: Simplify right side
    440,431.40x = 245,762,438,882.46
  5. Step 5: Solve for x
    x = 245,762,438,882.46/440,431.40
  6. Step 6: Final answer
    x = 558,003.90

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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.