Home / 782,392.98-1,079,728.89-438,243.69

Finding the Fourth Proportional to 782,392.98, 1,079,728.89 and 438,243.69

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Solution

The fourth proportional to 782,392.98, 1,079,728.89 and 438,243.69 is: 604,791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,392.98 : 1,079,728.89 = 438,243.69 : x
  2. Step 2: Convert to fraction form
    782,392.98/1,079,728.89 = 438,243.69/x
  3. Step 3: Cross multiply
    782,392.98x = 1,079,728.89 × 438,243.69
  4. Step 4: Simplify right side
    782,392.98x = 473,184,372,953.20
  5. Step 5: Solve for x
    x = 473,184,372,953.20/782,392.98
  6. Step 6: Final answer
    x = 604,791.18

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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.