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Finding the Fourth Proportional to 627,387, 865,799.33 and 340,907.10

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Solution

The fourth proportional to 627,387, 865,799.33 and 340,907.10 is: 470,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,387 : 865,799.33 = 340,907.10 : x
  2. Step 2: Convert to fraction form
    627,387/865,799.33 = 340,907.10/x
  3. Step 3: Cross multiply
    627,387x = 865,799.33 × 340,907.10
  4. Step 4: Simplify right side
    627,387x = 295,157,137,067.71
  5. Step 5: Solve for x
    x = 295,157,137,067.71/627,387
  6. Step 6: Final answer
    x = 470,454.66

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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.