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Finding the Fourth Proportional to 403,868.70, 605,803.05 and 401,103.90

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Solution

The fourth proportional to 403,868.70, 605,803.05 and 401,103.90 is: 601,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,868.70 : 605,803.05 = 401,103.90 : x
  2. Step 2: Convert to fraction form
    403,868.70/605,803.05 = 401,103.90/x
  3. Step 3: Cross multiply
    403,868.70x = 605,803.05 × 401,103.90
  4. Step 4: Simplify right side
    403,868.70x = 242,989,965,986.90
  5. Step 5: Solve for x
    x = 242,989,965,986.90/403,868.70
  6. Step 6: Final answer
    x = 601,655.85

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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.