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Finding the Fourth Proportional to 625,388.94, 863,334.27 and 419,012.69

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Solution

The fourth proportional to 625,388.94, 863,334.27 and 419,012.69 is: 578,436.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,388.94 : 863,334.27 = 419,012.69 : x
  2. Step 2: Convert to fraction form
    625,388.94/863,334.27 = 419,012.69/x
  3. Step 3: Cross multiply
    625,388.94x = 863,334.27 × 419,012.69
  4. Step 4: Simplify right side
    625,388.94x = 361,748,010,525.22
  5. Step 5: Solve for x
    x = 361,748,010,525.22/625,388.94
  6. Step 6: Final answer
    x = 578,436.85

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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.