Home / 627,247.28-865,538.78-355,260.90

Finding the Fourth Proportional to 627,247.28, 865,538.78 and 355,260.90

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Solution

The fourth proportional to 627,247.28, 865,538.78 and 355,260.90 is: 490,224.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,247.28 : 865,538.78 = 355,260.90 : x
  2. Step 2: Convert to fraction form
    627,247.28/865,538.78 = 355,260.90/x
  3. Step 3: Cross multiply
    627,247.28x = 865,538.78 × 355,260.90
  4. Step 4: Simplify right side
    627,247.28x = 307,492,085,967.70
  5. Step 5: Solve for x
    x = 307,492,085,967.70/627,247.28
  6. Step 6: Final answer
    x = 490,224.66

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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.