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Finding the Fourth Proportional to 909,969.90, 1,364,954.85 and 278,801.70

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Solution

The fourth proportional to 909,969.90, 1,364,954.85 and 278,801.70 is: 418,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,969.90 : 1,364,954.85 = 278,801.70 : x
  2. Step 2: Convert to fraction form
    909,969.90/1,364,954.85 = 278,801.70/x
  3. Step 3: Cross multiply
    909,969.90x = 1,364,954.85 × 278,801.70
  4. Step 4: Simplify right side
    909,969.90x = 380,551,732,603.25
  5. Step 5: Solve for x
    x = 380,551,732,603.25/909,969.90
  6. Step 6: Final answer
    x = 418,202.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.