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Finding the Fourth Proportional to 555,548.74, 766,653.66 and 313,909.54

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Solution

The fourth proportional to 555,548.74, 766,653.66 and 313,909.54 is: 433,193.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,548.74 : 766,653.66 = 313,909.54 : x
  2. Step 2: Convert to fraction form
    555,548.74/766,653.66 = 313,909.54/x
  3. Step 3: Cross multiply
    555,548.74x = 766,653.66 × 313,909.54
  4. Step 4: Simplify right side
    555,548.74x = 240,659,897,749.92
  5. Step 5: Solve for x
    x = 240,659,897,749.92/555,548.74
  6. Step 6: Final answer
    x = 433,193.13

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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.