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Finding the Fourth Proportional to 1,168,855.32, 1,752,230.34 and 420,375

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Solution

The fourth proportional to 1,168,855.32, 1,752,230.34 and 420,375 is: 630,183.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168,855.32 : 1,752,230.34 = 420,375 : x
  2. Step 2: Convert to fraction form
    1,168,855.32/1,752,230.34 = 420,375/x
  3. Step 3: Cross multiply
    1,168,855.32x = 1,752,230.34 × 420,375
  4. Step 4: Simplify right side
    1,168,855.32x = 736,593,829,177.50
  5. Step 5: Solve for x
    x = 736,593,829,177.50/1,168,855.32
  6. Step 6: Final answer
    x = 630,183.92

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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.