Home / 426,029.07-638,557.67-266,178.50

Finding the Fourth Proportional to 426,029.07, 638,557.67 and 266,178.50

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Solution

The fourth proportional to 426,029.07, 638,557.67 and 266,178.50 is: 398,964.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,029.07 : 638,557.67 = 266,178.50 : x
  2. Step 2: Convert to fraction form
    426,029.07/638,557.67 = 266,178.50/x
  3. Step 3: Cross multiply
    426,029.07x = 638,557.67 × 266,178.50
  4. Step 4: Simplify right side
    426,029.07x = 169,970,322,764.10
  5. Step 5: Solve for x
    x = 169,970,322,764.10/426,029.07
  6. Step 6: Final answer
    x = 398,964.14

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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.