Home / 721,836.63-1,082,146.05-455,009.04

Finding the Fourth Proportional to 721,836.63, 1,082,146.05 and 455,009.04

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Solution

The fourth proportional to 721,836.63, 1,082,146.05 and 455,009.04 is: 682,129.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,836.63 : 1,082,146.05 = 455,009.04 : x
  2. Step 2: Convert to fraction form
    721,836.63/1,082,146.05 = 455,009.04/x
  3. Step 3: Cross multiply
    721,836.63x = 1,082,146.05 × 455,009.04
  4. Step 4: Simplify right side
    721,836.63x = 492,386,235,350.29
  5. Step 5: Solve for x
    x = 492,386,235,350.29/721,836.63
  6. Step 6: Final answer
    x = 682,129.74

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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.