Home / 811,842.48-1,217,738.52-385,684.92

Finding the Fourth Proportional to 811,842.48, 1,217,738.52 and 385,684.92

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Solution

The fourth proportional to 811,842.48, 1,217,738.52 and 385,684.92 is: 578,515.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,842.48 : 1,217,738.52 = 385,684.92 : x
  2. Step 2: Convert to fraction form
    811,842.48/1,217,738.52 = 385,684.92/x
  3. Step 3: Cross multiply
    811,842.48x = 1,217,738.52 × 385,684.92
  4. Step 4: Simplify right side
    811,842.48x = 469,663,383,667.12
  5. Step 5: Solve for x
    x = 469,663,383,667.12/811,842.48
  6. Step 6: Final answer
    x = 578,515.41

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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.