Home / 721,945.20-1,081,751.40-455,228.40

Finding the Fourth Proportional to 721,945.20, 1,081,751.40 and 455,228.40

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Solution

The fourth proportional to 721,945.20, 1,081,751.40 and 455,228.40 is: 682,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,945.20 : 1,081,751.40 = 455,228.40 : x
  2. Step 2: Convert to fraction form
    721,945.20/1,081,751.40 = 455,228.40/x
  3. Step 3: Cross multiply
    721,945.20x = 1,081,751.40 × 455,228.40
  4. Step 4: Simplify right side
    721,945.20x = 492,443,959,019.76
  5. Step 5: Solve for x
    x = 492,443,959,019.76/721,945.20
  6. Step 6: Final answer
    x = 682,107.12

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1.5x scale

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.