Home / 1,318,513.20-1,977,769.80-432,049.20

Finding the Fourth Proportional to 1,318,513.20, 1,977,769.80 and 432,049.20

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Solution

The fourth proportional to 1,318,513.20, 1,977,769.80 and 432,049.20 is: 648,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,513.20 : 1,977,769.80 = 432,049.20 : x
  2. Step 2: Convert to fraction form
    1,318,513.20/1,977,769.80 = 432,049.20/x
  3. Step 3: Cross multiply
    1,318,513.20x = 1,977,769.80 × 432,049.20
  4. Step 4: Simplify right side
    1,318,513.20x = 854,493,859,874.16
  5. Step 5: Solve for x
    x = 854,493,859,874.16/1,318,513.20
  6. Step 6: Final answer
    x = 648,073.80

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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.