Home / 791,289.10-1,091,977.50-428,722.22

Finding the Fourth Proportional to 791,289.10, 1,091,977.50 and 428,722.22

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Solution

The fourth proportional to 791,289.10, 1,091,977.50 and 428,722.22 is: 591,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,289.10 : 1,091,977.50 = 428,722.22 : x
  2. Step 2: Convert to fraction form
    791,289.10/1,091,977.50 = 428,722.22/x
  3. Step 3: Cross multiply
    791,289.10x = 1,091,977.50 × 428,722.22
  4. Step 4: Simplify right side
    791,289.10x = 468,155,017,990.05
  5. Step 5: Solve for x
    x = 468,155,017,990.05/791,289.10
  6. Step 6: Final answer
    x = 591,635.87

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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.