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Finding the Fourth Proportional to 1,309,987.86, 1,964,981.67 and 363,358.62

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Solution

The fourth proportional to 1,309,987.86, 1,964,981.67 and 363,358.62 is: 545,037.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,987.86 : 1,964,981.67 = 363,358.62 : x
  2. Step 2: Convert to fraction form
    1,309,987.86/1,964,981.67 = 363,358.62/x
  3. Step 3: Cross multiply
    1,309,987.86x = 1,964,981.67 × 363,358.62
  4. Step 4: Simplify right side
    1,309,987.86x = 713,993,027,936.50
  5. Step 5: Solve for x
    x = 713,993,027,936.50/1,309,987.86
  6. Step 6: Final answer
    x = 545,037.90

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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.