Home / 816,885.51-1,225,328.81-255,963.75

Finding the Fourth Proportional to 816,885.51, 1,225,328.81 and 255,963.75

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Solution

The fourth proportional to 816,885.51, 1,225,328.81 and 255,963.75 is: 383,945.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,885.51 : 1,225,328.81 = 255,963.75 : x
  2. Step 2: Convert to fraction form
    816,885.51/1,225,328.81 = 255,963.75/x
  3. Step 3: Cross multiply
    816,885.51x = 1,225,328.81 × 255,963.75
  4. Step 4: Simplify right side
    816,885.51x = 313,639,755,910.82
  5. Step 5: Solve for x
    x = 313,639,755,910.82/816,885.51
  6. Step 6: Final answer
    x = 383,945.79

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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.