Home / 767,790.80-1,151,167.80-408,021.20

Finding the Fourth Proportional to 767,790.80, 1,151,167.80 and 408,021.20

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Solution

The fourth proportional to 767,790.80, 1,151,167.80 and 408,021.20 is: 611,756.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,790.80 : 1,151,167.80 = 408,021.20 : x
  2. Step 2: Convert to fraction form
    767,790.80/1,151,167.80 = 408,021.20/x
  3. Step 3: Cross multiply
    767,790.80x = 1,151,167.80 × 408,021.20
  4. Step 4: Simplify right side
    767,790.80x = 469,700,867,157.36
  5. Step 5: Solve for x
    x = 469,700,867,157.36/767,790.80
  6. Step 6: Final answer
    x = 611,756.31

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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.