Home / 721,822.80-1,082,734.20-518,869.20

Finding the Fourth Proportional to 721,822.80, 1,082,734.20 and 518,869.20

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Solution

The fourth proportional to 721,822.80, 1,082,734.20 and 518,869.20 is: 778,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,822.80 : 1,082,734.20 = 518,869.20 : x
  2. Step 2: Convert to fraction form
    721,822.80/1,082,734.20 = 518,869.20/x
  3. Step 3: Cross multiply
    721,822.80x = 1,082,734.20 × 518,869.20
  4. Step 4: Simplify right side
    721,822.80x = 561,797,428,166.64
  5. Step 5: Solve for x
    x = 561,797,428,166.64/721,822.80
  6. Step 6: Final answer
    x = 778,303.80

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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.