Home / 751,280.85-1,036,765.11-407,118.12

Finding the Fourth Proportional to 751,280.85, 1,036,765.11 and 407,118.12

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Solution

The fourth proportional to 751,280.85, 1,036,765.11 and 407,118.12 is: 561,821.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,280.85 : 1,036,765.11 = 407,118.12 : x
  2. Step 2: Convert to fraction form
    751,280.85/1,036,765.11 = 407,118.12/x
  3. Step 3: Cross multiply
    751,280.85x = 1,036,765.11 × 407,118.12
  4. Step 4: Simplify right side
    751,280.85x = 422,085,862,464.79
  5. Step 5: Solve for x
    x = 422,085,862,464.79/751,280.85
  6. Step 6: Final answer
    x = 561,821.67

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.