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Finding the Fourth Proportional to 571,677.30, 788,963.13 and 317,110.50

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Solution

The fourth proportional to 571,677.30, 788,963.13 and 317,110.50 is: 437,639.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,677.30 : 788,963.13 = 317,110.50 : x
  2. Step 2: Convert to fraction form
    571,677.30/788,963.13 = 317,110.50/x
  3. Step 3: Cross multiply
    571,677.30x = 788,963.13 × 317,110.50
  4. Step 4: Simplify right side
    571,677.30x = 250,188,492,635.87
  5. Step 5: Solve for x
    x = 250,188,492,635.87/571,677.30
  6. Step 6: Final answer
    x = 437,639.37

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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.