Home / 414,492.40-621,738.60-288,521.20

Finding the Fourth Proportional to 414,492.40, 621,738.60 and 288,521.20

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Solution

The fourth proportional to 414,492.40, 621,738.60 and 288,521.20 is: 432,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,492.40 : 621,738.60 = 288,521.20 : x
  2. Step 2: Convert to fraction form
    414,492.40/621,738.60 = 288,521.20/x
  3. Step 3: Cross multiply
    414,492.40x = 621,738.60 × 288,521.20
  4. Step 4: Simplify right side
    414,492.40x = 179,384,766,958.32
  5. Step 5: Solve for x
    x = 179,384,766,958.32/414,492.40
  6. Step 6: Final answer
    x = 432,781.80

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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.