Home / 426,557.88-639,598.68-268,447.50

Finding the Fourth Proportional to 426,557.88, 639,598.68 and 268,447.50

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Solution

The fourth proportional to 426,557.88, 639,598.68 and 268,447.50 is: 402,521.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,557.88 : 639,598.68 = 268,447.50 : x
  2. Step 2: Convert to fraction form
    426,557.88/639,598.68 = 268,447.50/x
  3. Step 3: Cross multiply
    426,557.88x = 639,598.68 × 268,447.50
  4. Step 4: Simplify right side
    426,557.88x = 171,698,666,649.30
  5. Step 5: Solve for x
    x = 171,698,666,649.30/426,557.88
  6. Step 6: Final answer
    x = 402,521.38

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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.