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Finding the Fourth Proportional to 961,662.68, 1,320,145.13 and 825,460.17

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Solution

The fourth proportional to 961,662.68, 1,320,145.13 and 825,460.17 is: 1,133,169.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,662.68 : 1,320,145.13 = 825,460.17 : x
  2. Step 2: Convert to fraction form
    961,662.68/1,320,145.13 = 825,460.17/x
  3. Step 3: Cross multiply
    961,662.68x = 1,320,145.13 × 825,460.17
  4. Step 4: Simplify right side
    961,662.68x = 1,089,727,219,307.17
  5. Step 5: Solve for x
    x = 1,089,727,219,307.17/961,662.68
  6. Step 6: Final answer
    x = 1,133,169.92

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.