Home / 782,454.84-1,079,801.38-438,287.78

Finding the Fourth Proportional to 782,454.84, 1,079,801.38 and 438,287.78

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Solution

The fourth proportional to 782,454.84, 1,079,801.38 and 438,287.78 is: 604,844.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,454.84 : 1,079,801.38 = 438,287.78 : x
  2. Step 2: Convert to fraction form
    782,454.84/1,079,801.38 = 438,287.78/x
  3. Step 3: Cross multiply
    782,454.84x = 1,079,801.38 × 438,287.78
  4. Step 4: Simplify right side
    782,454.84x = 473,263,749,681.14
  5. Step 5: Solve for x
    x = 473,263,749,681.14/782,454.84
  6. Step 6: Final answer
    x = 604,844.81

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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.