Home / 628,998.58-867,417.09-422,732.89

Finding the Fourth Proportional to 628,998.58, 867,417.09 and 422,732.89

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Solution

The fourth proportional to 628,998.58, 867,417.09 and 422,732.89 is: 582,967.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,998.58 : 867,417.09 = 422,732.89 : x
  2. Step 2: Convert to fraction form
    628,998.58/867,417.09 = 422,732.89/x
  3. Step 3: Cross multiply
    628,998.58x = 867,417.09 × 422,732.89
  4. Step 4: Simplify right side
    628,998.58x = 366,685,732,790.11
  5. Step 5: Solve for x
    x = 366,685,732,790.11/628,998.58
  6. Step 6: Final answer
    x = 582,967.50

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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.