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Finding the Fourth Proportional to 621,957.72, 858,299.88 and 350,025.60

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Solution

The fourth proportional to 621,957.72, 858,299.88 and 350,025.60 is: 483,034.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,957.72 : 858,299.88 = 350,025.60 : x
  2. Step 2: Convert to fraction form
    621,957.72/858,299.88 = 350,025.60/x
  3. Step 3: Cross multiply
    621,957.72x = 858,299.88 × 350,025.60
  4. Step 4: Simplify right side
    621,957.72x = 300,426,933,039.26
  5. Step 5: Solve for x
    x = 300,426,933,039.26/621,957.72
  6. Step 6: Final answer
    x = 483,034.33

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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.