Home / 644,388.38-889,256.02-357,935.12

Finding the Fourth Proportional to 644,388.38, 889,256.02 and 357,935.12

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Solution

The fourth proportional to 644,388.38, 889,256.02 and 357,935.12 is: 493,950.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,388.38 : 889,256.02 = 357,935.12 : x
  2. Step 2: Convert to fraction form
    644,388.38/889,256.02 = 357,935.12/x
  3. Step 3: Cross multiply
    644,388.38x = 889,256.02 × 357,935.12
  4. Step 4: Simplify right side
    644,388.38x = 318,295,960,229.42
  5. Step 5: Solve for x
    x = 318,295,960,229.42/644,388.38
  6. Step 6: Final answer
    x = 493,950.50

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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.