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Finding the Fourth Proportional to 577,613.65, 797,103.25 and 319,485.97

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Solution

The fourth proportional to 577,613.65, 797,103.25 and 319,485.97 is: 440,888.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,613.65 : 797,103.25 = 319,485.97 : x
  2. Step 2: Convert to fraction form
    577,613.65/797,103.25 = 319,485.97/x
  3. Step 3: Cross multiply
    577,613.65x = 797,103.25 × 319,485.97
  4. Step 4: Simplify right side
    577,613.65x = 254,663,305,214.07
  5. Step 5: Solve for x
    x = 254,663,305,214.07/577,613.65
  6. Step 6: Final answer
    x = 440,888.66

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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.