Home / 627,376.69-865,778.05-340,896.70

Finding the Fourth Proportional to 627,376.69, 865,778.05 and 340,896.70

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Solution

The fourth proportional to 627,376.69, 865,778.05 and 340,896.70 is: 470,436.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,376.69 : 865,778.05 = 340,896.70 : x
  2. Step 2: Convert to fraction form
    627,376.69/865,778.05 = 340,896.70/x
  3. Step 3: Cross multiply
    627,376.69x = 865,778.05 × 340,896.70
  4. Step 4: Simplify right side
    627,376.69x = 295,140,877,160.75
  5. Step 5: Solve for x
    x = 295,140,877,160.75/627,376.69
  6. Step 6: Final answer
    x = 470,436.47

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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.