Home / 1,131,190.80-1,696,786.20-499,779.60

Finding the Fourth Proportional to 1,131,190.80, 1,696,786.20 and 499,779.60

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Solution

The fourth proportional to 1,131,190.80, 1,696,786.20 and 499,779.60 is: 749,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,190.80 : 1,696,786.20 = 499,779.60 : x
  2. Step 2: Convert to fraction form
    1,131,190.80/1,696,786.20 = 499,779.60/x
  3. Step 3: Cross multiply
    1,131,190.80x = 1,696,786.20 × 499,779.60
  4. Step 4: Simplify right side
    1,131,190.80x = 848,019,128,321.52
  5. Step 5: Solve for x
    x = 848,019,128,321.52/1,131,190.80
  6. Step 6: Final answer
    x = 749,669.40

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Double scale
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1.5x scale

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.