Home / 627,384.78-865,789.29-340,905.87

Finding the Fourth Proportional to 627,384.78, 865,789.29 and 340,905.87

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Solution

The fourth proportional to 627,384.78, 865,789.29 and 340,905.87 is: 470,449.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,384.78 : 865,789.29 = 340,905.87 : x
  2. Step 2: Convert to fraction form
    627,384.78/865,789.29 = 340,905.87/x
  3. Step 3: Cross multiply
    627,384.78x = 865,789.29 × 340,905.87
  4. Step 4: Simplify right side
    627,384.78x = 295,152,651,144.13
  5. Step 5: Solve for x
    x = 295,152,651,144.13/627,384.78
  6. Step 6: Final answer
    x = 470,449.17

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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.