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Finding the Fourth Proportional to 555,657.72, 766,808.02 and 301,009.92

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Solution

The fourth proportional to 555,657.72, 766,808.02 and 301,009.92 is: 415,393.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,657.72 : 766,808.02 = 301,009.92 : x
  2. Step 2: Convert to fraction form
    555,657.72/766,808.02 = 301,009.92/x
  3. Step 3: Cross multiply
    555,657.72x = 766,808.02 × 301,009.92
  4. Step 4: Simplify right side
    555,657.72x = 230,816,820,755.56
  5. Step 5: Solve for x
    x = 230,816,820,755.56/555,657.72
  6. Step 6: Final answer
    x = 415,393.89

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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.