Home / 813,955.79-1,220,767.43-308,342.45

Finding the Fourth Proportional to 813,955.79, 1,220,767.43 and 308,342.45

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Solution

The fourth proportional to 813,955.79, 1,220,767.43 and 308,342.45 is: 462,450.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,955.79 : 1,220,767.43 = 308,342.45 : x
  2. Step 2: Convert to fraction form
    813,955.79/1,220,767.43 = 308,342.45/x
  3. Step 3: Cross multiply
    813,955.79x = 1,220,767.43 × 308,342.45
  4. Step 4: Simplify right side
    813,955.79x = 376,414,412,600.85
  5. Step 5: Solve for x
    x = 376,414,412,600.85/813,955.79
  6. Step 6: Final answer
    x = 462,450.69

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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.