Home / 726,738.80-1,090,108.56-326,912.48

Finding the Fourth Proportional to 726,738.80, 1,090,108.56 and 326,912.48

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Solution

The fourth proportional to 726,738.80, 1,090,108.56 and 326,912.48 is: 490,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,738.80 : 1,090,108.56 = 326,912.48 : x
  2. Step 2: Convert to fraction form
    726,738.80/1,090,108.56 = 326,912.48/x
  3. Step 3: Cross multiply
    726,738.80x = 1,090,108.56 × 326,912.48
  4. Step 4: Simplify right side
    726,738.80x = 356,370,092,818.83
  5. Step 5: Solve for x
    x = 356,370,092,818.83/726,738.80
  6. Step 6: Final answer
    x = 490,368.88

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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.