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Finding the Fourth Proportional to 2,938,892.40, 4,408,079.40 and 808,786.80

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Solution

The fourth proportional to 2,938,892.40, 4,408,079.40 and 808,786.80 is: 1,213,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938,892.40 : 4,408,079.40 = 808,786.80 : x
  2. Step 2: Convert to fraction form
    2,938,892.40/4,408,079.40 = 808,786.80/x
  3. Step 3: Cross multiply
    2,938,892.40x = 4,408,079.40 × 808,786.80
  4. Step 4: Simplify right side
    2,938,892.40x = 3,565,196,432,071.92
  5. Step 5: Solve for x
    x = 3,565,196,432,071.92/2,938,892.40
  6. Step 6: Final answer
    x = 1,213,108.87

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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.