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Finding the Fourth Proportional to 404,328.30, 605,617.65 and 262,610.70

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Solution

The fourth proportional to 404,328.30, 605,617.65 and 262,610.70 is: 393,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,328.30 : 605,617.65 = 262,610.70 : x
  2. Step 2: Convert to fraction form
    404,328.30/605,617.65 = 262,610.70/x
  3. Step 3: Cross multiply
    404,328.30x = 605,617.65 × 262,610.70
  4. Step 4: Simplify right side
    404,328.30x = 159,041,674,998.86
  5. Step 5: Solve for x
    x = 159,041,674,998.86/404,328.30
  6. Step 6: Final answer
    x = 393,347.87

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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.