Home / 627,121.68-865,429.56-340,639.44

Finding the Fourth Proportional to 627,121.68, 865,429.56 and 340,639.44

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Solution

The fourth proportional to 627,121.68, 865,429.56 and 340,639.44 is: 470,083.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,121.68 : 865,429.56 = 340,639.44 : x
  2. Step 2: Convert to fraction form
    627,121.68/865,429.56 = 340,639.44/x
  3. Step 3: Cross multiply
    627,121.68x = 865,429.56 × 340,639.44
  4. Step 4: Simplify right side
    627,121.68x = 294,799,440,677.85
  5. Step 5: Solve for x
    x = 294,799,440,677.85/627,121.68
  6. Step 6: Final answer
    x = 470,083.32

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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.