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Finding the Fourth Proportional to 644,240.22, 889,092.64 and 357,760.30

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Solution

The fourth proportional to 644,240.22, 889,092.64 and 357,760.30 is: 493,732.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,240.22 : 889,092.64 = 357,760.30 : x
  2. Step 2: Convert to fraction form
    644,240.22/889,092.64 = 357,760.30/x
  3. Step 3: Cross multiply
    644,240.22x = 889,092.64 × 357,760.30
  4. Step 4: Simplify right side
    644,240.22x = 318,082,049,614.19
  5. Step 5: Solve for x
    x = 318,082,049,614.19/644,240.22
  6. Step 6: Final answer
    x = 493,732.06

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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.