Home / 426,266.80-639,400.04-126,746.16

Finding the Fourth Proportional to 426,266.80, 639,400.04 and 126,746.16

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Solution

The fourth proportional to 426,266.80, 639,400.04 and 126,746.16 is: 190,119.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,266.80 : 639,400.04 = 126,746.16 : x
  2. Step 2: Convert to fraction form
    426,266.80/639,400.04 = 126,746.16/x
  3. Step 3: Cross multiply
    426,266.80x = 639,400.04 × 126,746.16
  4. Step 4: Simplify right side
    426,266.80x = 81,041,499,773.85
  5. Step 5: Solve for x
    x = 81,041,499,773.85/426,266.80
  6. Step 6: Final answer
    x = 190,119.19

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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.