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Finding the Fourth Proportional to 566,912.93, 782,340.90 and 308,789.08

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Solution

The fourth proportional to 566,912.93, 782,340.90 and 308,789.08 is: 426,129.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,912.93 : 782,340.90 = 308,789.08 : x
  2. Step 2: Convert to fraction form
    566,912.93/782,340.90 = 308,789.08/x
  3. Step 3: Cross multiply
    566,912.93x = 782,340.90 × 308,789.08
  4. Step 4: Simplify right side
    566,912.93x = 241,578,323,643.56
  5. Step 5: Solve for x
    x = 241,578,323,643.56/566,912.93
  6. Step 6: Final answer
    x = 426,129.50

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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.