Home / 826,502.20-1,239,271.56-320,471.98

Finding the Fourth Proportional to 826,502.20, 1,239,271.56 and 320,471.98

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Solution

The fourth proportional to 826,502.20, 1,239,271.56 and 320,471.98 is: 480,521.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,502.20 : 1,239,271.56 = 320,471.98 : x
  2. Step 2: Convert to fraction form
    826,502.20/1,239,271.56 = 320,471.98/x
  3. Step 3: Cross multiply
    826,502.20x = 1,239,271.56 × 320,471.98
  4. Step 4: Simplify right side
    826,502.20x = 397,151,810,590.89
  5. Step 5: Solve for x
    x = 397,151,810,590.89/826,502.20
  6. Step 6: Final answer
    x = 480,521.18

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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.