Home / 679,867.84-1,019,917.94-280,290.18

Finding the Fourth Proportional to 679,867.84, 1,019,917.94 and 280,290.18

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Solution

The fourth proportional to 679,867.84, 1,019,917.94 and 280,290.18 is: 420,483.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,867.84 : 1,019,917.94 = 280,290.18 : x
  2. Step 2: Convert to fraction form
    679,867.84/1,019,917.94 = 280,290.18/x
  3. Step 3: Cross multiply
    679,867.84x = 1,019,917.94 × 280,290.18
  4. Step 4: Simplify right side
    679,867.84x = 285,872,982,987.83
  5. Step 5: Solve for x
    x = 285,872,982,987.83/679,867.84
  6. Step 6: Final answer
    x = 420,483.17

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1.5x scale

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.