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Finding the Fourth Proportional to 571,329.77, 788,429.94 and 313,221.44

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Solution

The fourth proportional to 571,329.77, 788,429.94 and 313,221.44 is: 432,242.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,329.77 : 788,429.94 = 313,221.44 : x
  2. Step 2: Convert to fraction form
    571,329.77/788,429.94 = 313,221.44/x
  3. Step 3: Cross multiply
    571,329.77x = 788,429.94 × 313,221.44
  4. Step 4: Simplify right side
    571,329.77x = 246,953,161,942.41
  5. Step 5: Solve for x
    x = 246,953,161,942.41/571,329.77
  6. Step 6: Final answer
    x = 432,242.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.