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Finding the Fourth Proportional to 10,642,894.80, 15,966,415.80 and 4,252,059.60

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Solution

The fourth proportional to 10,642,894.80, 15,966,415.80 and 4,252,059.60 is: 6,378,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,642,894.80 : 15,966,415.80 = 4,252,059.60 : x
  2. Step 2: Convert to fraction form
    10,642,894.80/15,966,415.80 = 4,252,059.60/x
  3. Step 3: Cross multiply
    10,642,894.80x = 15,966,415.80 × 4,252,059.60
  4. Step 4: Simplify right side
    10,642,894.80x = 67,890,151,579,981.68
  5. Step 5: Solve for x
    x = 67,890,151,579,981.68/10,642,894.80
  6. Step 6: Final answer
    x = 6,378,917.85

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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.