Home / 627,035.72-865,280.34-355,105.57

Finding the Fourth Proportional to 627,035.72, 865,280.34 and 355,105.57

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Solution

The fourth proportional to 627,035.72, 865,280.34 and 355,105.57 is: 490,029.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,035.72 : 865,280.34 = 355,105.57 : x
  2. Step 2: Convert to fraction form
    627,035.72/865,280.34 = 355,105.57/x
  3. Step 3: Cross multiply
    627,035.72x = 865,280.34 × 355,105.57
  4. Step 4: Simplify right side
    627,035.72x = 307,265,868,345.49
  5. Step 5: Solve for x
    x = 307,265,868,345.49/627,035.72
  6. Step 6: Final answer
    x = 490,029.29

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1.5x scale

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.