Home / 764,420.10-1,146,630.15-512,477.70

Finding the Fourth Proportional to 764,420.10, 1,146,630.15 and 512,477.70

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Solution

The fourth proportional to 764,420.10, 1,146,630.15 and 512,477.70 is: 768,716.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,420.10 : 1,146,630.15 = 512,477.70 : x
  2. Step 2: Convert to fraction form
    764,420.10/1,146,630.15 = 512,477.70/x
  3. Step 3: Cross multiply
    764,420.10x = 1,146,630.15 × 512,477.70
  4. Step 4: Simplify right side
    764,420.10x = 587,622,382,022.66
  5. Step 5: Solve for x
    x = 587,622,382,022.66/764,420.10
  6. Step 6: Final answer
    x = 768,716.55

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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.