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Finding the Fourth Proportional to 555,667.72, 766,821.82 and 301,019.92

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Solution

The fourth proportional to 555,667.72, 766,821.82 and 301,019.92 is: 415,407.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,667.72 : 766,821.82 = 301,019.92 : x
  2. Step 2: Convert to fraction form
    555,667.72/766,821.82 = 301,019.92/x
  3. Step 3: Cross multiply
    555,667.72x = 766,821.82 × 301,019.92
  4. Step 4: Simplify right side
    555,667.72x = 230,828,642,910.65
  5. Step 5: Solve for x
    x = 230,828,642,910.65/555,667.72
  6. Step 6: Final answer
    x = 415,407.69

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1.5x scale

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.