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Finding the Fourth Proportional to 497,001.74, 685,821.96 and 279,198.58

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Solution

The fourth proportional to 497,001.74, 685,821.96 and 279,198.58 is: 385,271.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,001.74 : 685,821.96 = 279,198.58 : x
  2. Step 2: Convert to fraction form
    497,001.74/685,821.96 = 279,198.58/x
  3. Step 3: Cross multiply
    497,001.74x = 685,821.96 × 279,198.58
  4. Step 4: Simplify right side
    497,001.74x = 191,480,517,364.82
  5. Step 5: Solve for x
    x = 191,480,517,364.82/497,001.74
  6. Step 6: Final answer
    x = 385,271.32

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1.5x scale

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.