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Finding the Fourth Proportional to 496,608.71, 685,272.56 and 278,767.51

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Solution

The fourth proportional to 496,608.71, 685,272.56 and 278,767.51 is: 384,672.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,608.71 : 685,272.56 = 278,767.51 : x
  2. Step 2: Convert to fraction form
    496,608.71/685,272.56 = 278,767.51/x
  3. Step 3: Cross multiply
    496,608.71x = 685,272.56 × 278,767.51
  4. Step 4: Simplify right side
    496,608.71x = 191,031,722,115.51
  5. Step 5: Solve for x
    x = 191,031,722,115.51/496,608.71
  6. Step 6: Final answer
    x = 384,672.52

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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.