Home / 644,719.68-889,672.32-358,223.04

Finding the Fourth Proportional to 644,719.68, 889,672.32 and 358,223.04

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Solution

The fourth proportional to 644,719.68, 889,672.32 and 358,223.04 is: 494,325.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,719.68 : 889,672.32 = 358,223.04 : x
  2. Step 2: Convert to fraction form
    644,719.68/889,672.32 = 358,223.04/x
  3. Step 3: Cross multiply
    644,719.68x = 889,672.32 × 358,223.04
  4. Step 4: Simplify right side
    644,719.68x = 318,701,123,074.25
  5. Step 5: Solve for x
    x = 318,701,123,074.25/644,719.68
  6. Step 6: Final answer
    x = 494,325.10

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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.