Home / 1,260,257.60-1,890,559.20-418,721.60

Finding the Fourth Proportional to 1,260,257.60, 1,890,559.20 and 418,721.60

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Solution

The fourth proportional to 1,260,257.60, 1,890,559.20 and 418,721.60 is: 628,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,257.60 : 1,890,559.20 = 418,721.60 : x
  2. Step 2: Convert to fraction form
    1,260,257.60/1,890,559.20 = 418,721.60/x
  3. Step 3: Cross multiply
    1,260,257.60x = 1,890,559.20 × 418,721.60
  4. Step 4: Simplify right side
    1,260,257.60x = 791,617,973,118.72
  5. Step 5: Solve for x
    x = 791,617,973,118.72/1,260,257.60
  6. Step 6: Final answer
    x = 628,139.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.