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Finding the Fourth Proportional to 566,991.07, 782,410.54 and 312,342.26

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Solution

The fourth proportional to 566,991.07, 782,410.54 and 312,342.26 is: 431,011.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,991.07 : 782,410.54 = 312,342.26 : x
  2. Step 2: Convert to fraction form
    566,991.07/782,410.54 = 312,342.26/x
  3. Step 3: Cross multiply
    566,991.07x = 782,410.54 × 312,342.26
  4. Step 4: Simplify right side
    566,991.07x = 244,379,876,311.42
  5. Step 5: Solve for x
    x = 244,379,876,311.42/566,991.07
  6. Step 6: Final answer
    x = 431,011.86

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1.5x scale

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.