Home / 1,438,268.20-2,158,007.10-772,642.60

Finding the Fourth Proportional to 1,438,268.20, 2,158,007.10 and 772,642.60

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Solution

The fourth proportional to 1,438,268.20, 2,158,007.10 and 772,642.60 is: 1,159,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,268.20 : 2,158,007.10 = 772,642.60 : x
  2. Step 2: Convert to fraction form
    1,438,268.20/2,158,007.10 = 772,642.60/x
  3. Step 3: Cross multiply
    1,438,268.20x = 2,158,007.10 × 772,642.60
  4. Step 4: Simplify right side
    1,438,268.20x = 1,667,368,216,562.46
  5. Step 5: Solve for x
    x = 1,667,368,216,562.46/1,438,268.20
  6. Step 6: Final answer
    x = 1,159,288.80

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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.