Home / 876,011.20-1,314,016.80-515,812.30

Finding the Fourth Proportional to 876,011.20, 1,314,016.80 and 515,812.30

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Solution

The fourth proportional to 876,011.20, 1,314,016.80 and 515,812.30 is: 773,718.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,011.20 : 1,314,016.80 = 515,812.30 : x
  2. Step 2: Convert to fraction form
    876,011.20/1,314,016.80 = 515,812.30/x
  3. Step 3: Cross multiply
    876,011.20x = 1,314,016.80 × 515,812.30
  4. Step 4: Simplify right side
    876,011.20x = 677,786,027,846.64
  5. Step 5: Solve for x
    x = 677,786,027,846.64/876,011.20
  6. Step 6: Final answer
    x = 773,718.45

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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.