Home / 782,441.78-1,079,810.22-438,257.56

Finding the Fourth Proportional to 782,441.78, 1,079,810.22 and 438,257.56

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Solution

The fourth proportional to 782,441.78, 1,079,810.22 and 438,257.56 is: 604,818.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,441.78 : 1,079,810.22 = 438,257.56 : x
  2. Step 2: Convert to fraction form
    782,441.78/1,079,810.22 = 438,257.56/x
  3. Step 3: Cross multiply
    782,441.78x = 1,079,810.22 × 438,257.56
  4. Step 4: Simplify right side
    782,441.78x = 473,234,992,588.02
  5. Step 5: Solve for x
    x = 473,234,992,588.02/782,441.78
  6. Step 6: Final answer
    x = 604,818.16

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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.