Home / 642,399.42-885,670.35-552,718.86

Finding the Fourth Proportional to 642,399.42, 885,670.35 and 552,718.86

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Solution

The fourth proportional to 642,399.42, 885,670.35 and 552,718.86 is: 762,028.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,399.42 : 885,670.35 = 552,718.86 : x
  2. Step 2: Convert to fraction form
    642,399.42/885,670.35 = 552,718.86/x
  3. Step 3: Cross multiply
    642,399.42x = 885,670.35 × 552,718.86
  4. Step 4: Simplify right side
    642,399.42x = 489,526,706,187.80
  5. Step 5: Solve for x
    x = 489,526,706,187.80/642,399.42
  6. Step 6: Final answer
    x = 762,028.56

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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.