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Finding the Fourth Proportional to 612,555.44, 845,532.96 and 419,078.84

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Solution

The fourth proportional to 612,555.44, 845,532.96 and 419,078.84 is: 578,470.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,555.44 : 845,532.96 = 419,078.84 : x
  2. Step 2: Convert to fraction form
    612,555.44/845,532.96 = 419,078.84/x
  3. Step 3: Cross multiply
    612,555.44x = 845,532.96 × 419,078.84
  4. Step 4: Simplify right side
    612,555.44x = 354,344,972,058.57
  5. Step 5: Solve for x
    x = 354,344,972,058.57/612,555.44
  6. Step 6: Final answer
    x = 578,470.04

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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.