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Finding the Fourth Proportional to 929,793.60, 1,394,690.40 and 628,643.70

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Solution

The fourth proportional to 929,793.60, 1,394,690.40 and 628,643.70 is: 942,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,793.60 : 1,394,690.40 = 628,643.70 : x
  2. Step 2: Convert to fraction form
    929,793.60/1,394,690.40 = 628,643.70/x
  3. Step 3: Cross multiply
    929,793.60x = 1,394,690.40 × 628,643.70
  4. Step 4: Simplify right side
    929,793.60x = 876,763,333,410.48
  5. Step 5: Solve for x
    x = 876,763,333,410.48/929,793.60
  6. Step 6: Final answer
    x = 942,965.55

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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.