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Finding the Fourth Proportional to 567,329.04, 782,911.71 and 312,679.62

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Solution

The fourth proportional to 567,329.04, 782,911.71 and 312,679.62 is: 431,496.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,329.04 : 782,911.71 = 312,679.62 : x
  2. Step 2: Convert to fraction form
    567,329.04/782,911.71 = 312,679.62/x
  3. Step 3: Cross multiply
    567,329.04x = 782,911.71 × 312,679.62
  4. Step 4: Simplify right side
    567,329.04x = 244,800,535,976.35
  5. Step 5: Solve for x
    x = 244,800,535,976.35/567,329.04
  6. Step 6: Final answer
    x = 431,496.57

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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.