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Finding the Fourth Proportional to 627,373.90, 865,778.70 and 340,895.14

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Solution

The fourth proportional to 627,373.90, 865,778.70 and 340,895.14 is: 470,436.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,373.90 : 865,778.70 = 340,895.14 : x
  2. Step 2: Convert to fraction form
    627,373.90/865,778.70 = 340,895.14/x
  3. Step 3: Cross multiply
    627,373.90x = 865,778.70 × 340,895.14
  4. Step 4: Simplify right side
    627,373.90x = 295,139,751,145.52
  5. Step 5: Solve for x
    x = 295,139,751,145.52/627,373.90
  6. Step 6: Final answer
    x = 470,436.77

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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.