Home / 627,389.73-865,796.19-340,909.83

Finding the Fourth Proportional to 627,389.73, 865,796.19 and 340,909.83

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Solution

The fourth proportional to 627,389.73, 865,796.19 and 340,909.83 is: 470,454.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,389.73 : 865,796.19 = 340,909.83 : x
  2. Step 2: Convert to fraction form
    627,389.73/865,796.19 = 340,909.83/x
  3. Step 3: Cross multiply
    627,389.73x = 865,796.19 × 340,909.83
  4. Step 4: Simplify right side
    627,389.73x = 295,158,431,947.55
  5. Step 5: Solve for x
    x = 295,158,431,947.55/627,389.73
  6. Step 6: Final answer
    x = 470,454.68

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Double scale
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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.