Home / 525,083.40-787,625.10-399,112.20

Finding the Fourth Proportional to 525,083.40, 787,625.10 and 399,112.20

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Solution

The fourth proportional to 525,083.40, 787,625.10 and 399,112.20 is: 598,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,083.40 : 787,625.10 = 399,112.20 : x
  2. Step 2: Convert to fraction form
    525,083.40/787,625.10 = 399,112.20/x
  3. Step 3: Cross multiply
    525,083.40x = 787,625.10 × 399,112.20
  4. Step 4: Simplify right side
    525,083.40x = 314,350,786,436.22
  5. Step 5: Solve for x
    x = 314,350,786,436.22/525,083.40
  6. Step 6: Final answer
    x = 598,668.30

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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.