Home / 867,083.60-1,298,942.19-638,965.13

Finding the Fourth Proportional to 867,083.60, 1,298,942.19 and 638,965.13

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Solution

The fourth proportional to 867,083.60, 1,298,942.19 and 638,965.13 is: 957,207.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,083.60 : 1,298,942.19 = 638,965.13 : x
  2. Step 2: Convert to fraction form
    867,083.60/1,298,942.19 = 638,965.13/x
  3. Step 3: Cross multiply
    867,083.60x = 1,298,942.19 × 638,965.13
  4. Step 4: Simplify right side
    867,083.60x = 829,978,758,801.12
  5. Step 5: Solve for x
    x = 829,978,758,801.12/867,083.60
  6. Step 6: Final answer
    x = 957,207.31

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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.