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Finding the Fourth Proportional to 555,374.68, 766,401.65 and 329,020.18

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Solution

The fourth proportional to 555,374.68, 766,401.65 and 329,020.18 is: 454,038.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,374.68 : 766,401.65 = 329,020.18 : x
  2. Step 2: Convert to fraction form
    555,374.68/766,401.65 = 329,020.18/x
  3. Step 3: Cross multiply
    555,374.68x = 766,401.65 × 329,020.18
  4. Step 4: Simplify right side
    555,374.68x = 252,161,606,508.02
  5. Step 5: Solve for x
    x = 252,161,606,508.02/555,374.68
  6. Step 6: Final answer
    x = 454,038.72

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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.