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Finding the Fourth Proportional to 497,010.90, 685,834.56 and 279,207.72

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Solution

The fourth proportional to 497,010.90, 685,834.56 and 279,207.72 is: 385,283.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,010.90 : 685,834.56 = 279,207.72 : x
  2. Step 2: Convert to fraction form
    497,010.90/685,834.56 = 279,207.72/x
  3. Step 3: Cross multiply
    497,010.90x = 685,834.56 × 279,207.72
  4. Step 4: Simplify right side
    497,010.90x = 191,490,303,794.80
  5. Step 5: Solve for x
    x = 191,490,303,794.80/497,010.90
  6. Step 6: Final answer
    x = 385,283.91

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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.