Home / 481,615.20-722,428.32-126,665.10

Finding the Fourth Proportional to 481,615.20, 722,428.32 and 126,665.10

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Solution

The fourth proportional to 481,615.20, 722,428.32 and 126,665.10 is: 189,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,615.20 : 722,428.32 = 126,665.10 : x
  2. Step 2: Convert to fraction form
    481,615.20/722,428.32 = 126,665.10/x
  3. Step 3: Cross multiply
    481,615.20x = 722,428.32 × 126,665.10
  4. Step 4: Simplify right side
    481,615.20x = 91,506,455,395.63
  5. Step 5: Solve for x
    x = 91,506,455,395.63/481,615.20
  6. Step 6: Final answer
    x = 189,999.10

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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.