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Finding the Fourth Proportional to 6,642,710.90, 9,966,399.15 and 2,857,354.10

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Solution

The fourth proportional to 6,642,710.90, 9,966,399.15 and 2,857,354.10 is: 4,287,034.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,710.90 : 9,966,399.15 = 2,857,354.10 : x
  2. Step 2: Convert to fraction form
    6,642,710.90/9,966,399.15 = 2,857,354.10/x
  3. Step 3: Cross multiply
    6,642,710.90x = 9,966,399.15 × 2,857,354.10
  4. Step 4: Simplify right side
    6,642,710.90x = 28,477,531,473,489.02
  5. Step 5: Solve for x
    x = 28,477,531,473,489.02/6,642,710.90
  6. Step 6: Final answer
    x = 4,287,034.60

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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.