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Finding the Fourth Proportional to 627,054.95, 865,340.39 and 340,575.10

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Solution

The fourth proportional to 627,054.95, 865,340.39 and 340,575.10 is: 469,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,054.95 : 865,340.39 = 340,575.10 : x
  2. Step 2: Convert to fraction form
    627,054.95/865,340.39 = 340,575.10/x
  3. Step 3: Cross multiply
    627,054.95x = 865,340.39 × 340,575.10
  4. Step 4: Simplify right side
    627,054.95x = 294,713,388,546.38
  5. Step 5: Solve for x
    x = 294,713,388,546.38/627,054.95
  6. Step 6: Final answer
    x = 469,996.11

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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.