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Finding the Fourth Proportional to 555,401.68, 766,457.96 and 300,752.88

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Solution

The fourth proportional to 555,401.68, 766,457.96 and 300,752.88 is: 415,040.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,401.68 : 766,457.96 = 300,752.88 : x
  2. Step 2: Convert to fraction form
    555,401.68/766,457.96 = 300,752.88/x
  3. Step 3: Cross multiply
    555,401.68x = 766,457.96 × 300,752.88
  4. Step 4: Simplify right side
    555,401.68x = 230,514,438,868.93
  5. Step 5: Solve for x
    x = 230,514,438,868.93/555,401.68
  6. Step 6: Final answer
    x = 415,040.95

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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.