Home / 638,646.90-881,326.26-348,257.73

Finding the Fourth Proportional to 638,646.90, 881,326.26 and 348,257.73

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Solution

The fourth proportional to 638,646.90, 881,326.26 and 348,257.73 is: 480,592.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,646.90 : 881,326.26 = 348,257.73 : x
  2. Step 2: Convert to fraction form
    638,646.90/881,326.26 = 348,257.73/x
  3. Step 3: Cross multiply
    638,646.90x = 881,326.26 × 348,257.73
  4. Step 4: Simplify right side
    638,646.90x = 306,928,682,696.99
  5. Step 5: Solve for x
    x = 306,928,682,696.99/638,646.90
  6. Step 6: Final answer
    x = 480,592.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.