Home / 819,725.80-1,229,588.70-579,188.20

Finding the Fourth Proportional to 819,725.80, 1,229,588.70 and 579,188.20

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Solution

The fourth proportional to 819,725.80, 1,229,588.70 and 579,188.20 is: 868,782.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,725.80 : 1,229,588.70 = 579,188.20 : x
  2. Step 2: Convert to fraction form
    819,725.80/1,229,588.70 = 579,188.20/x
  3. Step 3: Cross multiply
    819,725.80x = 1,229,588.70 × 579,188.20
  4. Step 4: Simplify right side
    819,725.80x = 712,163,265,893.34
  5. Step 5: Solve for x
    x = 712,163,265,893.34/819,725.80
  6. Step 6: Final answer
    x = 868,782.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.