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Finding the Fourth Proportional to 655,884.40, 981,602.67 and 403,323.55

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Solution

The fourth proportional to 655,884.40, 981,602.67 and 403,323.55 is: 603,617.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,884.40 : 981,602.67 = 403,323.55 : x
  2. Step 2: Convert to fraction form
    655,884.40/981,602.67 = 403,323.55/x
  3. Step 3: Cross multiply
    655,884.40x = 981,602.67 × 403,323.55
  4. Step 4: Simplify right side
    655,884.40x = 395,903,473,553.88
  5. Step 5: Solve for x
    x = 395,903,473,553.88/655,884.40
  6. Step 6: Final answer
    x = 603,617.76

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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.