Home / 689,351.43-951,274.35-398,916.93

Finding the Fourth Proportional to 689,351.43, 951,274.35 and 398,916.93

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Solution

The fourth proportional to 689,351.43, 951,274.35 and 398,916.93 is: 550,487.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,351.43 : 951,274.35 = 398,916.93 : x
  2. Step 2: Convert to fraction form
    689,351.43/951,274.35 = 398,916.93/x
  3. Step 3: Cross multiply
    689,351.43x = 951,274.35 × 398,916.93
  4. Step 4: Simplify right side
    689,351.43x = 379,479,443,289.75
  5. Step 5: Solve for x
    x = 379,479,443,289.75/689,351.43
  6. Step 6: Final answer
    x = 550,487.64

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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.