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Finding the Fourth Proportional to 404,536.80, 605,422.80 and 354,770.40

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Solution

The fourth proportional to 404,536.80, 605,422.80 and 354,770.40 is: 530,943.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,536.80 : 605,422.80 = 354,770.40 : x
  2. Step 2: Convert to fraction form
    404,536.80/605,422.80 = 354,770.40/x
  3. Step 3: Cross multiply
    404,536.80x = 605,422.80 × 354,770.40
  4. Step 4: Simplify right side
    404,536.80x = 214,786,088,925.12
  5. Step 5: Solve for x
    x = 214,786,088,925.12/404,536.80
  6. Step 6: Final answer
    x = 530,943.26

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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.