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Finding the Fourth Proportional to 10,865,672.80, 16,298,509.20 and 3,291,654.40

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Solution

The fourth proportional to 10,865,672.80, 16,298,509.20 and 3,291,654.40 is: 4,937,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865,672.80 : 16,298,509.20 = 3,291,654.40 : x
  2. Step 2: Convert to fraction form
    10,865,672.80/16,298,509.20 = 3,291,654.40/x
  3. Step 3: Cross multiply
    10,865,672.80x = 16,298,509.20 × 3,291,654.40
  4. Step 4: Simplify right side
    10,865,672.80x = 53,649,059,521,620.48
  5. Step 5: Solve for x
    x = 53,649,059,521,620.48/10,865,672.80
  6. Step 6: Final answer
    x = 4,937,481.60

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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.