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Finding the Fourth Proportional to 28,934,492.80, 43,408,996.80 and 12,763,523.20

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Solution

The fourth proportional to 28,934,492.80, 43,408,996.80 and 12,763,523.20 is: 19,148,486.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,934,492.80 : 43,408,996.80 = 12,763,523.20 : x
  2. Step 2: Convert to fraction form
    28,934,492.80/43,408,996.80 = 12,763,523.20/x
  3. Step 3: Cross multiply
    28,934,492.80x = 43,408,996.80 × 12,763,523.20
  4. Step 4: Simplify right side
    28,934,492.80x = 554,051,737,745,525.69
  5. Step 5: Solve for x
    x = 554,051,737,745,525.69/28,934,492.80
  6. Step 6: Final answer
    x = 19,148,486.26

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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.