Home / 658,403.06-987,597.30-209,111.90

Finding the Fourth Proportional to 658,403.06, 987,597.30 and 209,111.90

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Solution

The fourth proportional to 658,403.06, 987,597.30 and 209,111.90 is: 313,665.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,403.06 : 987,597.30 = 209,111.90 : x
  2. Step 2: Convert to fraction form
    658,403.06/987,597.30 = 209,111.90/x
  3. Step 3: Cross multiply
    658,403.06x = 987,597.30 × 209,111.90
  4. Step 4: Simplify right side
    658,403.06x = 206,518,347,837.87
  5. Step 5: Solve for x
    x = 206,518,347,837.87/658,403.06
  6. Step 6: Final answer
    x = 313,665.53

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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.