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Finding the Fourth Proportional to 555,663.72, 766,816.29 and 301,015.92

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Solution

The fourth proportional to 555,663.72, 766,816.29 and 301,015.92 is: 415,402.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,663.72 : 766,816.29 = 301,015.92 : x
  2. Step 2: Convert to fraction form
    555,663.72/766,816.29 = 301,015.92/x
  3. Step 3: Cross multiply
    555,663.72x = 766,816.29 × 301,015.92
  4. Step 4: Simplify right side
    555,663.72x = 230,823,911,005.34
  5. Step 5: Solve for x
    x = 230,823,911,005.34/555,663.72
  6. Step 6: Final answer
    x = 415,402.16

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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.