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Finding the Fourth Proportional to 571,865.80, 857,798.70 and 394,918.60

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Solution

The fourth proportional to 571,865.80, 857,798.70 and 394,918.60 is: 592,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,865.80 : 857,798.70 = 394,918.60 : x
  2. Step 2: Convert to fraction form
    571,865.80/857,798.70 = 394,918.60/x
  3. Step 3: Cross multiply
    571,865.80x = 857,798.70 × 394,918.60
  4. Step 4: Simplify right side
    571,865.80x = 338,760,661,685.82
  5. Step 5: Solve for x
    x = 338,760,661,685.82/571,865.80
  6. Step 6: Final answer
    x = 592,377.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.