Home / 816,628.40-1,224,856.20-255,633.20

Finding the Fourth Proportional to 816,628.40, 1,224,856.20 and 255,633.20

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Solution

The fourth proportional to 816,628.40, 1,224,856.20 and 255,633.20 is: 383,422.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,628.40 : 1,224,856.20 = 255,633.20 : x
  2. Step 2: Convert to fraction form
    816,628.40/1,224,856.20 = 255,633.20/x
  3. Step 3: Cross multiply
    816,628.40x = 1,224,856.20 × 255,633.20
  4. Step 4: Simplify right side
    816,628.40x = 313,113,909,945.84
  5. Step 5: Solve for x
    x = 313,113,909,945.84/816,628.40
  6. Step 6: Final answer
    x = 383,422.75

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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.