Home / 780,139.35-1,170,427.73-380,793.15

Finding the Fourth Proportional to 780,139.35, 1,170,427.73 and 380,793.15

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Solution

The fourth proportional to 780,139.35, 1,170,427.73 and 380,793.15 is: 571,296.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,139.35 : 1,170,427.73 = 380,793.15 : x
  2. Step 2: Convert to fraction form
    780,139.35/1,170,427.73 = 380,793.15/x
  3. Step 3: Cross multiply
    780,139.35x = 1,170,427.73 × 380,793.15
  4. Step 4: Simplify right side
    780,139.35x = 445,690,860,250.08
  5. Step 5: Solve for x
    x = 445,690,860,250.08/780,139.35
  6. Step 6: Final answer
    x = 571,296.47

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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.