Home / 764,421.40-1,146,632.10-231,916.60

Finding the Fourth Proportional to 764,421.40, 1,146,632.10 and 231,916.60

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Solution

The fourth proportional to 764,421.40, 1,146,632.10 and 231,916.60 is: 347,874.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,421.40 : 1,146,632.10 = 231,916.60 : x
  2. Step 2: Convert to fraction form
    764,421.40/1,146,632.10 = 231,916.60/x
  3. Step 3: Cross multiply
    764,421.40x = 1,146,632.10 × 231,916.60
  4. Step 4: Simplify right side
    764,421.40x = 265,923,018,082.86
  5. Step 5: Solve for x
    x = 265,923,018,082.86/764,421.40
  6. Step 6: Final answer
    x = 347,874.90

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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.