Home / 612,228-844,493.40-420,909.24

Finding the Fourth Proportional to 612,228, 844,493.40 and 420,909.24

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Solution

The fourth proportional to 612,228, 844,493.40 and 420,909.24 is: 580,592.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,228 : 844,493.40 = 420,909.24 : x
  2. Step 2: Convert to fraction form
    612,228/844,493.40 = 420,909.24/x
  3. Step 3: Cross multiply
    612,228x = 844,493.40 × 420,909.24
  4. Step 4: Simplify right side
    612,228x = 355,455,075,179.02
  5. Step 5: Solve for x
    x = 355,455,075,179.02/612,228
  6. Step 6: Final answer
    x = 580,592.65

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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.