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Finding the Fourth Proportional to 3,553,213.20, 5,329,819.80 and 893,821.20

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Solution

The fourth proportional to 3,553,213.20, 5,329,819.80 and 893,821.20 is: 1,340,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,553,213.20 : 5,329,819.80 = 893,821.20 : x
  2. Step 2: Convert to fraction form
    3,553,213.20/5,329,819.80 = 893,821.20/x
  3. Step 3: Cross multiply
    3,553,213.20x = 5,329,819.80 × 893,821.20
  4. Step 4: Simplify right side
    3,553,213.20x = 4,763,905,929,419.76
  5. Step 5: Solve for x
    x = 4,763,905,929,419.76/3,553,213.20
  6. Step 6: Final answer
    x = 1,340,731.80

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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.