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Finding the Fourth Proportional to 570,593.87, 787,409.92 and 315,939.59

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Solution

The fourth proportional to 570,593.87, 787,409.92 and 315,939.59 is: 435,991.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,593.87 : 787,409.92 = 315,939.59 : x
  2. Step 2: Convert to fraction form
    570,593.87/787,409.92 = 315,939.59/x
  3. Step 3: Cross multiply
    570,593.87x = 787,409.92 × 315,939.59
  4. Step 4: Simplify right side
    570,593.87x = 248,773,969,650.18
  5. Step 5: Solve for x
    x = 248,773,969,650.18/570,593.87
  6. Step 6: Final answer
    x = 435,991.31

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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.