Home / 825,497.60-1,238,246.40-638,643.20

Finding the Fourth Proportional to 825,497.60, 1,238,246.40 and 638,643.20

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Solution

The fourth proportional to 825,497.60, 1,238,246.40 and 638,643.20 is: 957,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,497.60 : 1,238,246.40 = 638,643.20 : x
  2. Step 2: Convert to fraction form
    825,497.60/1,238,246.40 = 638,643.20/x
  3. Step 3: Cross multiply
    825,497.60x = 1,238,246.40 × 638,643.20
  4. Step 4: Simplify right side
    825,497.60x = 790,797,643,284.48
  5. Step 5: Solve for x
    x = 790,797,643,284.48/825,497.60
  6. Step 6: Final answer
    x = 957,964.80

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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.