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Finding the Fourth Proportional to 621,425.52, 857,438.63 and 363,252.56

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Solution

The fourth proportional to 621,425.52, 857,438.63 and 363,252.56 is: 501,213.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,425.52 : 857,438.63 = 363,252.56 : x
  2. Step 2: Convert to fraction form
    621,425.52/857,438.63 = 363,252.56/x
  3. Step 3: Cross multiply
    621,425.52x = 857,438.63 × 363,252.56
  4. Step 4: Simplify right side
    621,425.52x = 311,466,779,079.92
  5. Step 5: Solve for x
    x = 311,466,779,079.92/621,425.52
  6. Step 6: Final answer
    x = 501,213.37

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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.