Home / 782,231.56-1,079,390.30-438,019.63

Finding the Fourth Proportional to 782,231.56, 1,079,390.30 and 438,019.63

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Solution

The fourth proportional to 782,231.56, 1,079,390.30 and 438,019.63 is: 604,417.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,231.56 : 1,079,390.30 = 438,019.63 : x
  2. Step 2: Convert to fraction form
    782,231.56/1,079,390.30 = 438,019.63/x
  3. Step 3: Cross multiply
    782,231.56x = 1,079,390.30 × 438,019.63
  4. Step 4: Simplify right side
    782,231.56x = 472,794,134,943.02
  5. Step 5: Solve for x
    x = 472,794,134,943.02/782,231.56
  6. Step 6: Final answer
    x = 604,417.11

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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.