Home / 876,019.20-1,314,028.80-515,820.30

Finding the Fourth Proportional to 876,019.20, 1,314,028.80 and 515,820.30

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Solution

The fourth proportional to 876,019.20, 1,314,028.80 and 515,820.30 is: 773,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,019.20 : 1,314,028.80 = 515,820.30 : x
  2. Step 2: Convert to fraction form
    876,019.20/1,314,028.80 = 515,820.30/x
  3. Step 3: Cross multiply
    876,019.20x = 1,314,028.80 × 515,820.30
  4. Step 4: Simplify right side
    876,019.20x = 677,802,729,824.64
  5. Step 5: Solve for x
    x = 677,802,729,824.64/876,019.20
  6. Step 6: Final answer
    x = 773,730.45

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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.