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Finding the Fourth Proportional to 557,806.84, 835,790.76 and 321,348.40

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Solution

The fourth proportional to 557,806.84, 835,790.76 and 321,348.40 is: 481,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,806.84 : 835,790.76 = 321,348.40 : x
  2. Step 2: Convert to fraction form
    557,806.84/835,790.76 = 321,348.40/x
  3. Step 3: Cross multiply
    557,806.84x = 835,790.76 × 321,348.40
  4. Step 4: Simplify right side
    557,806.84x = 268,580,023,460.78
  5. Step 5: Solve for x
    x = 268,580,023,460.78/557,806.84
  6. Step 6: Final answer
    x = 481,492.88

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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.