Home / 913,992.68-1,371,269.28-408,978.80

Finding the Fourth Proportional to 913,992.68, 1,371,269.28 and 408,978.80

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Solution

The fourth proportional to 913,992.68, 1,371,269.28 and 408,978.80 is: 613,593.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,992.68 : 1,371,269.28 = 408,978.80 : x
  2. Step 2: Convert to fraction form
    913,992.68/1,371,269.28 = 408,978.80/x
  3. Step 3: Cross multiply
    913,992.68x = 1,371,269.28 × 408,978.80
  4. Step 4: Simplify right side
    913,992.68x = 560,820,064,611.26
  5. Step 5: Solve for x
    x = 560,820,064,611.26/913,992.68
  6. Step 6: Final answer
    x = 613,593.61

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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.