Home / 407,821.20-611,731.80-313,233.45

Finding the Fourth Proportional to 407,821.20, 611,731.80 and 313,233.45

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Solution

The fourth proportional to 407,821.20, 611,731.80 and 313,233.45 is: 469,850.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,821.20 : 611,731.80 = 313,233.45 : x
  2. Step 2: Convert to fraction form
    407,821.20/611,731.80 = 313,233.45/x
  3. Step 3: Cross multiply
    407,821.20x = 611,731.80 × 313,233.45
  4. Step 4: Simplify right side
    407,821.20x = 191,614,862,188.71
  5. Step 5: Solve for x
    x = 191,614,862,188.71/407,821.20
  6. Step 6: Final answer
    x = 469,850.18

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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.