Home / 780,053.70-1,170,080.55-691,480.20

Finding the Fourth Proportional to 780,053.70, 1,170,080.55 and 691,480.20

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Solution

The fourth proportional to 780,053.70, 1,170,080.55 and 691,480.20 is: 1,037,220.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,053.70 : 1,170,080.55 = 691,480.20 : x
  2. Step 2: Convert to fraction form
    780,053.70/1,170,080.55 = 691,480.20/x
  3. Step 3: Cross multiply
    780,053.70x = 1,170,080.55 × 691,480.20
  4. Step 4: Simplify right side
    780,053.70x = 809,087,532,730.11
  5. Step 5: Solve for x
    x = 809,087,532,730.11/780,053.70
  6. Step 6: Final answer
    x = 1,037,220.30

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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.