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Finding the Fourth Proportional to 6,448,242.80, 9,672,905.64 and 1,960,557.68

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Solution

The fourth proportional to 6,448,242.80, 9,672,905.64 and 1,960,557.68 is: 2,941,001.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448,242.80 : 9,672,905.64 = 1,960,557.68 : x
  2. Step 2: Convert to fraction form
    6,448,242.80/9,672,905.64 = 1,960,557.68/x
  3. Step 3: Cross multiply
    6,448,242.80x = 9,672,905.64 × 1,960,557.68
  4. Step 4: Simplify right side
    6,448,242.80x = 18,964,289,440,417.32
  5. Step 5: Solve for x
    x = 18,964,289,440,417.32/6,448,242.80
  6. Step 6: Final answer
    x = 2,941,001.14

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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.