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Finding the Fourth Proportional to 478,771.49, 660,764.52 and 274,886.33

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Solution

The fourth proportional to 478,771.49, 660,764.52 and 274,886.33 is: 379,377.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,771.49 : 660,764.52 = 274,886.33 : x
  2. Step 2: Convert to fraction form
    478,771.49/660,764.52 = 274,886.33/x
  3. Step 3: Cross multiply
    478,771.49x = 660,764.52 × 274,886.33
  4. Step 4: Simplify right side
    478,771.49x = 181,635,130,593.19
  5. Step 5: Solve for x
    x = 181,635,130,593.19/478,771.49
  6. Step 6: Final answer
    x = 379,377.50

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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.