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Finding the Fourth Proportional to 627,228.96, 939,679.47 and 424,727.34

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Solution

The fourth proportional to 627,228.96, 939,679.47 and 424,727.34 is: 636,302.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,228.96 : 939,679.47 = 424,727.34 : x
  2. Step 2: Convert to fraction form
    627,228.96/939,679.47 = 424,727.34/x
  3. Step 3: Cross multiply
    627,228.96x = 939,679.47 × 424,727.34
  4. Step 4: Simplify right side
    627,228.96x = 399,107,561,745.71
  5. Step 5: Solve for x
    x = 399,107,561,745.71/627,228.96
  6. Step 6: Final answer
    x = 636,302.83

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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.