Home / 661,201.04-991,722.72-391,490.48

Finding the Fourth Proportional to 661,201.04, 991,722.72 and 391,490.48

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Solution

The fourth proportional to 661,201.04, 991,722.72 and 391,490.48 is: 587,189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,201.04 : 991,722.72 = 391,490.48 : x
  2. Step 2: Convert to fraction form
    661,201.04/991,722.72 = 391,490.48/x
  3. Step 3: Cross multiply
    661,201.04x = 991,722.72 × 391,490.48
  4. Step 4: Simplify right side
    661,201.04x = 388,250,007,627.10
  5. Step 5: Solve for x
    x = 388,250,007,627.10/661,201.04
  6. Step 6: Final answer
    x = 587,189.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.