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Finding the Fourth Proportional to 3,000,391.50, 4,140,579.15 and 1,642,235.34

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Solution

The fourth proportional to 3,000,391.50, 4,140,579.15 and 1,642,235.34 is: 2,266,306.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000,391.50 : 4,140,579.15 = 1,642,235.34 : x
  2. Step 2: Convert to fraction form
    3,000,391.50/4,140,579.15 = 1,642,235.34/x
  3. Step 3: Cross multiply
    3,000,391.50x = 4,140,579.15 × 1,642,235.34
  4. Step 4: Simplify right side
    3,000,391.50x = 6,799,805,408,197.16
  5. Step 5: Solve for x
    x = 6,799,805,408,197.16/3,000,391.50
  6. Step 6: Final answer
    x = 2,266,306.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.