Home / 664,839.10-917,512.30-406,635.04

Finding the Fourth Proportional to 664,839.10, 917,512.30 and 406,635.04

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Solution

The fourth proportional to 664,839.10, 917,512.30 and 406,635.04 is: 561,177.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,839.10 : 917,512.30 = 406,635.04 : x
  2. Step 2: Convert to fraction form
    664,839.10/917,512.30 = 406,635.04/x
  3. Step 3: Cross multiply
    664,839.10x = 917,512.30 × 406,635.04
  4. Step 4: Simplify right side
    664,839.10x = 373,092,644,190.26
  5. Step 5: Solve for x
    x = 373,092,644,190.26/664,839.10
  6. Step 6: Final answer
    x = 561,177.35

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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.