Home / 780,137.80-1,170,206.70-360,233.80

Finding the Fourth Proportional to 780,137.80, 1,170,206.70 and 360,233.80

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Solution

The fourth proportional to 780,137.80, 1,170,206.70 and 360,233.80 is: 540,350.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,137.80 : 1,170,206.70 = 360,233.80 : x
  2. Step 2: Convert to fraction form
    780,137.80/1,170,206.70 = 360,233.80/x
  3. Step 3: Cross multiply
    780,137.80x = 1,170,206.70 × 360,233.80
  4. Step 4: Simplify right side
    780,137.80x = 421,548,006,326.46
  5. Step 5: Solve for x
    x = 421,548,006,326.46/780,137.80
  6. Step 6: Final answer
    x = 540,350.70

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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.