Home / 641,213.75-885,228.14-480,010.79

Finding the Fourth Proportional to 641,213.75, 885,228.14 and 480,010.79

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Solution

The fourth proportional to 641,213.75, 885,228.14 and 480,010.79 is: 662,679.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,213.75 : 885,228.14 = 480,010.79 : x
  2. Step 2: Convert to fraction form
    641,213.75/885,228.14 = 480,010.79/x
  3. Step 3: Cross multiply
    641,213.75x = 885,228.14 × 480,010.79
  4. Step 4: Simplify right side
    641,213.75x = 424,919,058,811.63
  5. Step 5: Solve for x
    x = 424,919,058,811.63/641,213.75
  6. Step 6: Final answer
    x = 662,679.27

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.