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Finding the Fourth Proportional to 627,933.84, 866,443.56 and 369,862.20

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Solution

The fourth proportional to 627,933.84, 866,443.56 and 369,862.20 is: 510,347.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,933.84 : 866,443.56 = 369,862.20 : x
  2. Step 2: Convert to fraction form
    627,933.84/866,443.56 = 369,862.20/x
  3. Step 3: Cross multiply
    627,933.84x = 866,443.56 × 369,862.20
  4. Step 4: Simplify right side
    627,933.84x = 320,464,721,277.43
  5. Step 5: Solve for x
    x = 320,464,721,277.43/627,933.84
  6. Step 6: Final answer
    x = 510,347.91

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Double scale
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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.