Home / 405,286.20-607,929.30-124,889.40

Finding the Fourth Proportional to 405,286.20, 607,929.30 and 124,889.40

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Solution

The fourth proportional to 405,286.20, 607,929.30 and 124,889.40 is: 187,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,286.20 : 607,929.30 = 124,889.40 : x
  2. Step 2: Convert to fraction form
    405,286.20/607,929.30 = 124,889.40/x
  3. Step 3: Cross multiply
    405,286.20x = 607,929.30 × 124,889.40
  4. Step 4: Simplify right side
    405,286.20x = 75,923,925,519.42
  5. Step 5: Solve for x
    x = 75,923,925,519.42/405,286.20
  6. Step 6: Final answer
    x = 187,334.10

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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.