Home / 515,033.80-772,550.70-438,926.20

Finding the Fourth Proportional to 515,033.80, 772,550.70 and 438,926.20

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Solution

The fourth proportional to 515,033.80, 772,550.70 and 438,926.20 is: 658,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,033.80 : 772,550.70 = 438,926.20 : x
  2. Step 2: Convert to fraction form
    515,033.80/772,550.70 = 438,926.20/x
  3. Step 3: Cross multiply
    515,033.80x = 772,550.70 × 438,926.20
  4. Step 4: Simplify right side
    515,033.80x = 339,092,743,058.34
  5. Step 5: Solve for x
    x = 339,092,743,058.34/515,033.80
  6. Step 6: Final answer
    x = 658,389.30

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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.