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Finding the Fourth Proportional to 635,916.80, 877,555.22 and 349,430.74

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Solution

The fourth proportional to 635,916.80, 877,555.22 and 349,430.74 is: 482,208.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,916.80 : 877,555.22 = 349,430.74 : x
  2. Step 2: Convert to fraction form
    635,916.80/877,555.22 = 349,430.74/x
  3. Step 3: Cross multiply
    635,916.80x = 877,555.22 × 349,430.74
  4. Step 4: Simplify right side
    635,916.80x = 306,644,765,974.42
  5. Step 5: Solve for x
    x = 306,644,765,974.42/635,916.80
  6. Step 6: Final answer
    x = 482,208.94

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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.