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Finding the Fourth Proportional to 1,213,250.76, 1,821,450.78 and 932,964.84

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Solution

The fourth proportional to 1,213,250.76, 1,821,450.78 and 932,964.84 is: 1,400,658.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,250.76 : 1,821,450.78 = 932,964.84 : x
  2. Step 2: Convert to fraction form
    1,213,250.76/1,821,450.78 = 932,964.84/x
  3. Step 3: Cross multiply
    1,213,250.76x = 1,821,450.78 × 932,964.84
  4. Step 4: Simplify right side
    1,213,250.76x = 1,699,349,535,530.58
  5. Step 5: Solve for x
    x = 1,699,349,535,530.58/1,213,250.76
  6. Step 6: Final answer
    x = 1,400,658.13

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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.