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Finding the Fourth Proportional to 764,800.80, 1,146,472.20 and 284,900.10

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Solution

The fourth proportional to 764,800.80, 1,146,472.20 and 284,900.10 is: 427,078.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,800.80 : 1,146,472.20 = 284,900.10 : x
  2. Step 2: Convert to fraction form
    764,800.80/1,146,472.20 = 284,900.10/x
  3. Step 3: Cross multiply
    764,800.80x = 1,146,472.20 × 284,900.10
  4. Step 4: Simplify right side
    764,800.80x = 326,630,044,427.22
  5. Step 5: Solve for x
    x = 326,630,044,427.22/764,800.80
  6. Step 6: Final answer
    x = 427,078.59

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Double scale
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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.