Home / 780,157.20-1,170,235.80-721,837.20

Finding the Fourth Proportional to 780,157.20, 1,170,235.80 and 721,837.20

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Solution

The fourth proportional to 780,157.20, 1,170,235.80 and 721,837.20 is: 1,082,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,157.20 : 1,170,235.80 = 721,837.20 : x
  2. Step 2: Convert to fraction form
    780,157.20/1,170,235.80 = 721,837.20/x
  3. Step 3: Cross multiply
    780,157.20x = 1,170,235.80 × 721,837.20
  4. Step 4: Simplify right side
    780,157.20x = 844,719,733,211.76
  5. Step 5: Solve for x
    x = 844,719,733,211.76/780,157.20
  6. Step 6: Final answer
    x = 1,082,755.80

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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.