Home / 426,114.70-639,172.05-268,521.10

Finding the Fourth Proportional to 426,114.70, 639,172.05 and 268,521.10

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Solution

The fourth proportional to 426,114.70, 639,172.05 and 268,521.10 is: 402,781.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,114.70 : 639,172.05 = 268,521.10 : x
  2. Step 2: Convert to fraction form
    426,114.70/639,172.05 = 268,521.10/x
  3. Step 3: Cross multiply
    426,114.70x = 639,172.05 × 268,521.10
  4. Step 4: Simplify right side
    426,114.70x = 171,631,181,955.26
  5. Step 5: Solve for x
    x = 171,631,181,955.26/426,114.70
  6. Step 6: Final answer
    x = 402,781.65

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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.