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Finding the Fourth Proportional to 866,394.86, 1,299,315.85 and 297,638.81

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Solution

The fourth proportional to 866,394.86, 1,299,315.85 and 297,638.81 is: 446,363.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,394.86 : 1,299,315.85 = 297,638.81 : x
  2. Step 2: Convert to fraction form
    866,394.86/1,299,315.85 = 297,638.81/x
  3. Step 3: Cross multiply
    866,394.86x = 1,299,315.85 × 297,638.81
  4. Step 4: Simplify right side
    866,394.86x = 386,726,823,408.14
  5. Step 5: Solve for x
    x = 386,726,823,408.14/866,394.86
  6. Step 6: Final answer
    x = 446,363.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.