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Finding the Fourth Proportional to 627,330.61, 865,724.12 and 340,855.48

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Solution

The fourth proportional to 627,330.61, 865,724.12 and 340,855.48 is: 470,384.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,330.61 : 865,724.12 = 340,855.48 : x
  2. Step 2: Convert to fraction form
    627,330.61/865,724.12 = 340,855.48/x
  3. Step 3: Cross multiply
    627,330.61x = 865,724.12 × 340,855.48
  4. Step 4: Simplify right side
    627,330.61x = 295,086,810,470.18
  5. Step 5: Solve for x
    x = 295,086,810,470.18/627,330.61
  6. Step 6: Final answer
    x = 470,384.84

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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.