Home / 627,121.60-865,432.24-340,641.62

Finding the Fourth Proportional to 627,121.60, 865,432.24 and 340,641.62

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Solution

The fourth proportional to 627,121.60, 865,432.24 and 340,641.62 is: 470,087.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,121.60 : 865,432.24 = 340,641.62 : x
  2. Step 2: Convert to fraction form
    627,121.60/865,432.24 = 340,641.62/x
  3. Step 3: Cross multiply
    627,121.60x = 865,432.24 × 340,641.62
  4. Step 4: Simplify right side
    627,121.60x = 294,802,240,233.83
  5. Step 5: Solve for x
    x = 294,802,240,233.83/627,121.60
  6. Step 6: Final answer
    x = 470,087.84

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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.