Home / 680,916.58-1,021,243.65-207,649.78

Finding the Fourth Proportional to 680,916.58, 1,021,243.65 and 207,649.78

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Solution

The fourth proportional to 680,916.58, 1,021,243.65 and 207,649.78 is: 311,434.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,916.58 : 1,021,243.65 = 207,649.78 : x
  2. Step 2: Convert to fraction form
    680,916.58/1,021,243.65 = 207,649.78/x
  3. Step 3: Cross multiply
    680,916.58x = 1,021,243.65 × 207,649.78
  4. Step 4: Simplify right side
    680,916.58x = 212,061,015,917.10
  5. Step 5: Solve for x
    x = 212,061,015,917.10/680,916.58
  6. Step 6: Final answer
    x = 311,434.65

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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.