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Finding the Fourth Proportional to 655,883.40, 981,601.17 and 403,322.55

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Solution

The fourth proportional to 655,883.40, 981,601.17 and 403,322.55 is: 603,616.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,883.40 : 981,601.17 = 403,322.55 : x
  2. Step 2: Convert to fraction form
    655,883.40/981,601.17 = 403,322.55/x
  3. Step 3: Cross multiply
    655,883.40x = 981,601.17 × 403,322.55
  4. Step 4: Simplify right side
    655,883.40x = 395,901,886,967.38
  5. Step 5: Solve for x
    x = 395,901,886,967.38/655,883.40
  6. Step 6: Final answer
    x = 603,616.26

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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.