Home / 627,309.23-865,658.53-355,371.58

Finding the Fourth Proportional to 627,309.23, 865,658.53 and 355,371.58

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Solution

The fourth proportional to 627,309.23, 865,658.53 and 355,371.58 is: 490,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,309.23 : 865,658.53 = 355,371.58 : x
  2. Step 2: Convert to fraction form
    627,309.23/865,658.53 = 355,371.58/x
  3. Step 3: Cross multiply
    627,309.23x = 865,658.53 × 355,371.58
  4. Step 4: Simplify right side
    627,309.23x = 307,630,438,138.46
  5. Step 5: Solve for x
    x = 307,630,438,138.46/627,309.23
  6. Step 6: Final answer
    x = 490,396.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.