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Finding the Fourth Proportional to 497,041.80, 745,562.70 and 443,128.20

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Solution

The fourth proportional to 497,041.80, 745,562.70 and 443,128.20 is: 664,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,041.80 : 745,562.70 = 443,128.20 : x
  2. Step 2: Convert to fraction form
    497,041.80/745,562.70 = 443,128.20/x
  3. Step 3: Cross multiply
    497,041.80x = 745,562.70 × 443,128.20
  4. Step 4: Simplify right side
    497,041.80x = 330,379,857,238.14
  5. Step 5: Solve for x
    x = 330,379,857,238.14/497,041.80
  6. Step 6: Final answer
    x = 664,692.30

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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.