Home / 813,401.60-1,220,102.40-252,492.80

Finding the Fourth Proportional to 813,401.60, 1,220,102.40 and 252,492.80

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Solution

The fourth proportional to 813,401.60, 1,220,102.40 and 252,492.80 is: 378,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,401.60 : 1,220,102.40 = 252,492.80 : x
  2. Step 2: Convert to fraction form
    813,401.60/1,220,102.40 = 252,492.80/x
  3. Step 3: Cross multiply
    813,401.60x = 1,220,102.40 × 252,492.80
  4. Step 4: Simplify right side
    813,401.60x = 308,067,071,262.72
  5. Step 5: Solve for x
    x = 308,067,071,262.72/813,401.60
  6. Step 6: Final answer
    x = 378,739.20

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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.