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Finding the Fourth Proportional to 12,897,790.64, 19,346,852.04 and 3,797,819.20

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Solution

The fourth proportional to 12,897,790.64, 19,346,852.04 and 3,797,819.20 is: 5,696,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897,790.64 : 19,346,852.04 = 3,797,819.20 : x
  2. Step 2: Convert to fraction form
    12,897,790.64/19,346,852.04 = 3,797,819.20/x
  3. Step 3: Cross multiply
    12,897,790.64x = 19,346,852.04 × 3,797,819.20
  4. Step 4: Simplify right side
    12,897,790.64x = 73,475,846,137,071.17
  5. Step 5: Solve for x
    x = 73,475,846,137,071.17/12,897,790.64
  6. Step 6: Final answer
    x = 5,696,777.70

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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.