Home / 722,039.20-1,083,836.40-407,111.20

Finding the Fourth Proportional to 722,039.20, 1,083,836.40 and 407,111.20

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Solution

The fourth proportional to 722,039.20, 1,083,836.40 and 407,111.20 is: 611,105.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,039.20 : 1,083,836.40 = 407,111.20 : x
  2. Step 2: Convert to fraction form
    722,039.20/1,083,836.40 = 407,111.20/x
  3. Step 3: Cross multiply
    722,039.20x = 1,083,836.40 × 407,111.20
  4. Step 4: Simplify right side
    722,039.20x = 441,241,937,407.68
  5. Step 5: Solve for x
    x = 441,241,937,407.68/722,039.20
  6. Step 6: Final answer
    x = 611,105.24

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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.