Home / 525,142.20-787,713.30-259,030.20

Finding the Fourth Proportional to 525,142.20, 787,713.30 and 259,030.20

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Solution

The fourth proportional to 525,142.20, 787,713.30 and 259,030.20 is: 388,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,142.20 : 787,713.30 = 259,030.20 : x
  2. Step 2: Convert to fraction form
    525,142.20/787,713.30 = 259,030.20/x
  3. Step 3: Cross multiply
    525,142.20x = 787,713.30 × 259,030.20
  4. Step 4: Simplify right side
    525,142.20x = 204,041,533,641.66
  5. Step 5: Solve for x
    x = 204,041,533,641.66/525,142.20
  6. Step 6: Final answer
    x = 388,545.30

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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.