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Finding the Fourth Proportional to 655,891.79, 981,615.56 and 403,332.24

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Solution

The fourth proportional to 655,891.79, 981,615.56 and 403,332.24 is: 603,631.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,891.79 : 981,615.56 = 403,332.24 : x
  2. Step 2: Convert to fraction form
    655,891.79/981,615.56 = 403,332.24/x
  3. Step 3: Cross multiply
    655,891.79x = 981,615.56 × 403,332.24
  4. Step 4: Simplify right side
    655,891.79x = 395,917,200,616.99
  5. Step 5: Solve for x
    x = 395,917,200,616.99/655,891.79
  6. Step 6: Final answer
    x = 603,631.89

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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.