Home / 627,005.34-865,320.73-355,121.60

Finding the Fourth Proportional to 627,005.34, 865,320.73 and 355,121.60

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Solution

The fourth proportional to 627,005.34, 865,320.73 and 355,121.60 is: 490,098.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,005.34 : 865,320.73 = 355,121.60 : x
  2. Step 2: Convert to fraction form
    627,005.34/865,320.73 = 355,121.60/x
  3. Step 3: Cross multiply
    627,005.34x = 865,320.73 × 355,121.60
  4. Step 4: Simplify right side
    627,005.34x = 307,294,082,150.77
  5. Step 5: Solve for x
    x = 307,294,082,150.77/627,005.34
  6. Step 6: Final answer
    x = 490,098.03

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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.