Home / 627,012.36-865,330.43-355,128.62

Finding the Fourth Proportional to 627,012.36, 865,330.43 and 355,128.62

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Solution

The fourth proportional to 627,012.36, 865,330.43 and 355,128.62 is: 490,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,012.36 : 865,330.43 = 355,128.62 : x
  2. Step 2: Convert to fraction form
    627,012.36/865,330.43 = 355,128.62/x
  3. Step 3: Cross multiply
    627,012.36x = 865,330.43 × 355,128.62
  4. Step 4: Simplify right side
    627,012.36x = 307,303,595,347.61
  5. Step 5: Solve for x
    x = 307,303,595,347.61/627,012.36
  6. Step 6: Final answer
    x = 490,107.72

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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.