Home / 426,946.56-640,396.76-216,579.03

Finding the Fourth Proportional to 426,946.56, 640,396.76 and 216,579.03

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Solution

The fourth proportional to 426,946.56, 640,396.76 and 216,579.03 is: 324,856.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,946.56 : 640,396.76 = 216,579.03 : x
  2. Step 2: Convert to fraction form
    426,946.56/640,396.76 = 216,579.03/x
  3. Step 3: Cross multiply
    426,946.56x = 640,396.76 × 216,579.03
  4. Step 4: Simplify right side
    426,946.56x = 138,696,508,013.05
  5. Step 5: Solve for x
    x = 138,696,508,013.05/426,946.56
  6. Step 6: Final answer
    x = 324,856.83

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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.