Home / 426,219.69-639,435.24-126,699.72

Finding the Fourth Proportional to 426,219.69, 639,435.24 and 126,699.72

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Solution

The fourth proportional to 426,219.69, 639,435.24 and 126,699.72 is: 190,081.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,219.69 : 639,435.24 = 126,699.72 : x
  2. Step 2: Convert to fraction form
    426,219.69/639,435.24 = 126,699.72/x
  3. Step 3: Cross multiply
    426,219.69x = 639,435.24 × 126,699.72
  4. Step 4: Simplify right side
    426,219.69x = 81,016,265,866.13
  5. Step 5: Solve for x
    x = 81,016,265,866.13/426,219.69
  6. Step 6: Final answer
    x = 190,081.00

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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.