Home / 780,051.90-1,170,077.85-654,080.70

Finding the Fourth Proportional to 780,051.90, 1,170,077.85 and 654,080.70

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Solution

The fourth proportional to 780,051.90, 1,170,077.85 and 654,080.70 is: 981,121.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,051.90 : 1,170,077.85 = 654,080.70 : x
  2. Step 2: Convert to fraction form
    780,051.90/1,170,077.85 = 654,080.70/x
  3. Step 3: Cross multiply
    780,051.90x = 1,170,077.85 × 654,080.70
  4. Step 4: Simplify right side
    780,051.90x = 765,325,339,182.50
  5. Step 5: Solve for x
    x = 765,325,339,182.50/780,051.90
  6. Step 6: Final answer
    x = 981,121.05

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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.