Home / 627,429.47-865,850.99-340,949.61

Finding the Fourth Proportional to 627,429.47, 865,850.99 and 340,949.61

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Solution

The fourth proportional to 627,429.47, 865,850.99 and 340,949.61 is: 470,509.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,429.47 : 865,850.99 = 340,949.61 : x
  2. Step 2: Convert to fraction form
    627,429.47/865,850.99 = 340,949.61/x
  3. Step 3: Cross multiply
    627,429.47x = 865,850.99 × 340,949.61
  4. Step 4: Simplify right side
    627,429.47x = 295,211,555,653.87
  5. Step 5: Solve for x
    x = 295,211,555,653.87/627,429.47
  6. Step 6: Final answer
    x = 470,509.55

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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.