Home / 816,633.40-1,224,863.70-255,638.20

Finding the Fourth Proportional to 816,633.40, 1,224,863.70 and 255,638.20

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Solution

The fourth proportional to 816,633.40, 1,224,863.70 and 255,638.20 is: 383,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,633.40 : 1,224,863.70 = 255,638.20 : x
  2. Step 2: Convert to fraction form
    816,633.40/1,224,863.70 = 255,638.20/x
  3. Step 3: Cross multiply
    816,633.40x = 1,224,863.70 × 255,638.20
  4. Step 4: Simplify right side
    816,633.40x = 313,121,951,513.34
  5. Step 5: Solve for x
    x = 313,121,951,513.34/816,633.40
  6. Step 6: Final answer
    x = 383,430.25

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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.