Home / 859,388.12-1,289,107.74-410,156.36

Finding the Fourth Proportional to 859,388.12, 1,289,107.74 and 410,156.36

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Solution

The fourth proportional to 859,388.12, 1,289,107.74 and 410,156.36 is: 615,246.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,388.12 : 1,289,107.74 = 410,156.36 : x
  2. Step 2: Convert to fraction form
    859,388.12/1,289,107.74 = 410,156.36/x
  3. Step 3: Cross multiply
    859,388.12x = 1,289,107.74 × 410,156.36
  4. Step 4: Simplify right side
    859,388.12x = 528,735,738,286.23
  5. Step 5: Solve for x
    x = 528,735,738,286.23/859,388.12
  6. Step 6: Final answer
    x = 615,246.74

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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.