Home / 686,443.86-1,029,959.82-331,722.18

Finding the Fourth Proportional to 686,443.86, 1,029,959.82 and 331,722.18

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Solution

The fourth proportional to 686,443.86, 1,029,959.82 and 331,722.18 is: 497,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,443.86 : 1,029,959.82 = 331,722.18 : x
  2. Step 2: Convert to fraction form
    686,443.86/1,029,959.82 = 331,722.18/x
  3. Step 3: Cross multiply
    686,443.86x = 1,029,959.82 × 331,722.18
  4. Step 4: Simplify right side
    686,443.86x = 341,660,516,802.81
  5. Step 5: Solve for x
    x = 341,660,516,802.81/686,443.86
  6. Step 6: Final answer
    x = 497,725.36

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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.