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Finding the Fourth Proportional to 404,311.80, 605,430.90 and 298,558.20

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Solution

The fourth proportional to 404,311.80, 605,430.90 and 298,558.20 is: 447,071.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,311.80 : 605,430.90 = 298,558.20 : x
  2. Step 2: Convert to fraction form
    404,311.80/605,430.90 = 298,558.20/x
  3. Step 3: Cross multiply
    404,311.80x = 605,430.90 × 298,558.20
  4. Step 4: Simplify right side
    404,311.80x = 180,756,359,728.38
  5. Step 5: Solve for x
    x = 180,756,359,728.38/404,311.80
  6. Step 6: Final answer
    x = 447,071.69

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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.