Home / 743,047.30-1,025,405.17-420,757.30

Finding the Fourth Proportional to 743,047.30, 1,025,405.17 and 420,757.30

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Solution

The fourth proportional to 743,047.30, 1,025,405.17 and 420,757.30 is: 580,645.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,047.30 : 1,025,405.17 = 420,757.30 : x
  2. Step 2: Convert to fraction form
    743,047.30/1,025,405.17 = 420,757.30/x
  3. Step 3: Cross multiply
    743,047.30x = 1,025,405.17 × 420,757.30
  4. Step 4: Simplify right side
    743,047.30x = 431,446,710,735.24
  5. Step 5: Solve for x
    x = 431,446,710,735.24/743,047.30
  6. Step 6: Final answer
    x = 580,645.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.