Home / 679,867.34-1,019,917.19-280,289.68

Finding the Fourth Proportional to 679,867.34, 1,019,917.19 and 280,289.68

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Solution

The fourth proportional to 679,867.34, 1,019,917.19 and 280,289.68 is: 420,482.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,867.34 : 1,019,917.19 = 280,289.68 : x
  2. Step 2: Convert to fraction form
    679,867.34/1,019,917.19 = 280,289.68/x
  3. Step 3: Cross multiply
    679,867.34x = 1,019,917.19 × 280,289.68
  4. Step 4: Simplify right side
    679,867.34x = 285,872,264,086.50
  5. Step 5: Solve for x
    x = 285,872,264,086.50/679,867.34
  6. Step 6: Final answer
    x = 420,482.42

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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.