Home / 1,318,700.80-1,978,051.20-862,055.20

Finding the Fourth Proportional to 1,318,700.80, 1,978,051.20 and 862,055.20

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Solution

The fourth proportional to 1,318,700.80, 1,978,051.20 and 862,055.20 is: 1,293,082.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,700.80 : 1,978,051.20 = 862,055.20 : x
  2. Step 2: Convert to fraction form
    1,318,700.80/1,978,051.20 = 862,055.20/x
  3. Step 3: Cross multiply
    1,318,700.80x = 1,978,051.20 × 862,055.20
  4. Step 4: Simplify right side
    1,318,700.80x = 1,705,189,322,826.24
  5. Step 5: Solve for x
    x = 1,705,189,322,826.24/1,318,700.80
  6. Step 6: Final answer
    x = 1,293,082.80

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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.