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Finding the Fourth Proportional to 403,887.70, 605,831.55 and 401,122.90

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Solution

The fourth proportional to 403,887.70, 605,831.55 and 401,122.90 is: 601,684.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,887.70 : 605,831.55 = 401,122.90 : x
  2. Step 2: Convert to fraction form
    403,887.70/605,831.55 = 401,122.90/x
  3. Step 3: Cross multiply
    403,887.70x = 605,831.55 × 401,122.90
  4. Step 4: Simplify right side
    403,887.70x = 243,012,908,247.50
  5. Step 5: Solve for x
    x = 243,012,908,247.50/403,887.70
  6. Step 6: Final answer
    x = 601,684.35

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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.