Home / 644,556.60-889,630.38-358,175.16

Finding the Fourth Proportional to 644,556.60, 889,630.38 and 358,175.16

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Solution

The fourth proportional to 644,556.60, 889,630.38 and 358,175.16 is: 494,360.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,556.60 : 889,630.38 = 358,175.16 : x
  2. Step 2: Convert to fraction form
    644,556.60/889,630.38 = 358,175.16/x
  3. Step 3: Cross multiply
    644,556.60x = 889,630.38 × 358,175.16
  4. Step 4: Simplify right side
    644,556.60x = 318,643,503,697.36
  5. Step 5: Solve for x
    x = 318,643,503,697.36/644,556.60
  6. Step 6: Final answer
    x = 494,360.78

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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.