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Finding the Fourth Proportional to 426,281.28, 638,989.26 and 364,065.28

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Solution

The fourth proportional to 426,281.28, 638,989.26 and 364,065.28 is: 545,728.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,281.28 : 638,989.26 = 364,065.28 : x
  2. Step 2: Convert to fraction form
    426,281.28/638,989.26 = 364,065.28/x
  3. Step 3: Cross multiply
    426,281.28x = 638,989.26 × 364,065.28
  4. Step 4: Simplify right side
    426,281.28x = 232,633,804,490.49
  5. Step 5: Solve for x
    x = 232,633,804,490.49/426,281.28
  6. Step 6: Final answer
    x = 545,728.41

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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.