Home / 743,121.10-1,025,570.36-420,888.52

Finding the Fourth Proportional to 743,121.10, 1,025,570.36 and 420,888.52

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Solution

The fourth proportional to 743,121.10, 1,025,570.36 and 420,888.52 is: 580,861.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,121.10 : 1,025,570.36 = 420,888.52 : x
  2. Step 2: Convert to fraction form
    743,121.10/1,025,570.36 = 420,888.52/x
  3. Step 3: Cross multiply
    743,121.10x = 1,025,570.36 × 420,888.52
  4. Step 4: Simplify right side
    743,121.10x = 431,650,790,976.27
  5. Step 5: Solve for x
    x = 431,650,790,976.27/743,121.10
  6. Step 6: Final answer
    x = 580,861.98

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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.