Home / 891,121.42-1,337,032.25-392,135.50

Finding the Fourth Proportional to 891,121.42, 1,337,032.25 and 392,135.50

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Solution

The fourth proportional to 891,121.42, 1,337,032.25 and 392,135.50 is: 588,357.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,121.42 : 1,337,032.25 = 392,135.50 : x
  2. Step 2: Convert to fraction form
    891,121.42/1,337,032.25 = 392,135.50/x
  3. Step 3: Cross multiply
    891,121.42x = 1,337,032.25 × 392,135.50
  4. Step 4: Simplify right side
    891,121.42x = 524,297,809,869.88
  5. Step 5: Solve for x
    x = 524,297,809,869.88/891,121.42
  6. Step 6: Final answer
    x = 588,357.32

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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.