Home / 826,752.30-1,239,645.74-320,721.90

Finding the Fourth Proportional to 826,752.30, 1,239,645.74 and 320,721.90

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Solution

The fourth proportional to 826,752.30, 1,239,645.74 and 320,721.90 is: 480,895.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,752.30 : 1,239,645.74 = 320,721.90 : x
  2. Step 2: Convert to fraction form
    826,752.30/1,239,645.74 = 320,721.90/x
  3. Step 3: Cross multiply
    826,752.30x = 1,239,645.74 × 320,721.90
  4. Step 4: Simplify right side
    826,752.30x = 397,581,537,059.71
  5. Step 5: Solve for x
    x = 397,581,537,059.71/826,752.30
  6. Step 6: Final answer
    x = 480,895.59

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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.