Home / 813,956.79-1,220,768.92-308,343.45

Finding the Fourth Proportional to 813,956.79, 1,220,768.92 and 308,343.45

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Solution

The fourth proportional to 813,956.79, 1,220,768.92 and 308,343.45 is: 462,452.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,956.79 : 1,220,768.92 = 308,343.45 : x
  2. Step 2: Convert to fraction form
    813,956.79/1,220,768.92 = 308,343.45/x
  3. Step 3: Cross multiply
    813,956.79x = 1,220,768.92 × 308,343.45
  4. Step 4: Simplify right side
    813,956.79x = 376,416,100,445.57
  5. Step 5: Solve for x
    x = 376,416,100,445.57/813,956.79
  6. Step 6: Final answer
    x = 462,452.19

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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.