Home / 869,000.30-1,303,500.45-307,961.90

Finding the Fourth Proportional to 869,000.30, 1,303,500.45 and 307,961.90

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Solution

The fourth proportional to 869,000.30, 1,303,500.45 and 307,961.90 is: 461,942.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,000.30 : 1,303,500.45 = 307,961.90 : x
  2. Step 2: Convert to fraction form
    869,000.30/1,303,500.45 = 307,961.90/x
  3. Step 3: Cross multiply
    869,000.30x = 1,303,500.45 × 307,961.90
  4. Step 4: Simplify right side
    869,000.30x = 401,428,475,232.86
  5. Step 5: Solve for x
    x = 401,428,475,232.86/869,000.30
  6. Step 6: Final answer
    x = 461,942.85

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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.