Home / 819,644.90-1,229,467.35-465,350.90

Finding the Fourth Proportional to 819,644.90, 1,229,467.35 and 465,350.90

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Solution

The fourth proportional to 819,644.90, 1,229,467.35 and 465,350.90 is: 698,026.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,644.90 : 1,229,467.35 = 465,350.90 : x
  2. Step 2: Convert to fraction form
    819,644.90/1,229,467.35 = 465,350.90/x
  3. Step 3: Cross multiply
    819,644.90x = 1,229,467.35 × 465,350.90
  4. Step 4: Simplify right side
    819,644.90x = 572,133,737,843.12
  5. Step 5: Solve for x
    x = 572,133,737,843.12/819,644.90
  6. Step 6: Final answer
    x = 698,026.35

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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.