Home / 627,813.20-941,719.80-438,856.40

Finding the Fourth Proportional to 627,813.20, 941,719.80 and 438,856.40

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Solution

The fourth proportional to 627,813.20, 941,719.80 and 438,856.40 is: 658,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,813.20 : 941,719.80 = 438,856.40 : x
  2. Step 2: Convert to fraction form
    627,813.20/941,719.80 = 438,856.40/x
  3. Step 3: Cross multiply
    627,813.20x = 941,719.80 × 438,856.40
  4. Step 4: Simplify right side
    627,813.20x = 413,279,761,236.72
  5. Step 5: Solve for x
    x = 413,279,761,236.72/627,813.20
  6. Step 6: Final answer
    x = 658,284.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.