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Finding the Fourth Proportional to 627,314.88, 865,712.16 and 369,210

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Solution

The fourth proportional to 627,314.88, 865,712.16 and 369,210 is: 509,520.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,314.88 : 865,712.16 = 369,210 : x
  2. Step 2: Convert to fraction form
    627,314.88/865,712.16 = 369,210/x
  3. Step 3: Cross multiply
    627,314.88x = 865,712.16 × 369,210
  4. Step 4: Simplify right side
    627,314.88x = 319,629,586,593.60
  5. Step 5: Solve for x
    x = 319,629,586,593.60/627,314.88
  6. Step 6: Final answer
    x = 509,520.17

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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.