Home / 780,135.90-1,170,203.85-673,847.70

Finding the Fourth Proportional to 780,135.90, 1,170,203.85 and 673,847.70

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Solution

The fourth proportional to 780,135.90, 1,170,203.85 and 673,847.70 is: 1,010,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,135.90 : 1,170,203.85 = 673,847.70 : x
  2. Step 2: Convert to fraction form
    780,135.90/1,170,203.85 = 673,847.70/x
  3. Step 3: Cross multiply
    780,135.90x = 1,170,203.85 × 673,847.70
  4. Step 4: Simplify right side
    780,135.90x = 788,539,172,853.65
  5. Step 5: Solve for x
    x = 788,539,172,853.65/780,135.90
  6. Step 6: Final answer
    x = 1,010,771.55

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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.