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Finding the Fourth Proportional to 644,608.59, 889,507.69 and 372,693.93

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Solution

The fourth proportional to 644,608.59, 889,507.69 and 372,693.93 is: 514,287.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,608.59 : 889,507.69 = 372,693.93 : x
  2. Step 2: Convert to fraction form
    644,608.59/889,507.69 = 372,693.93/x
  3. Step 3: Cross multiply
    644,608.59x = 889,507.69 × 372,693.93
  4. Step 4: Simplify right side
    644,608.59x = 331,514,116,751.32
  5. Step 5: Solve for x
    x = 331,514,116,751.32/644,608.59
  6. Step 6: Final answer
    x = 514,287.46

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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.