Home / 926,991.60-1,390,487.40-394,378.80

Finding the Fourth Proportional to 926,991.60, 1,390,487.40 and 394,378.80

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Solution

The fourth proportional to 926,991.60, 1,390,487.40 and 394,378.80 is: 591,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,991.60 : 1,390,487.40 = 394,378.80 : x
  2. Step 2: Convert to fraction form
    926,991.60/1,390,487.40 = 394,378.80/x
  3. Step 3: Cross multiply
    926,991.60x = 1,390,487.40 × 394,378.80
  4. Step 4: Simplify right side
    926,991.60x = 548,378,752,227.12
  5. Step 5: Solve for x
    x = 548,378,752,227.12/926,991.60
  6. Step 6: Final answer
    x = 591,568.20

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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.