Home / 1,284,465.86-1,926,969.33-485,729.72

Finding the Fourth Proportional to 1,284,465.86, 1,926,969.33 and 485,729.72

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Solution

The fourth proportional to 1,284,465.86, 1,926,969.33 and 485,729.72 is: 728,696.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,465.86 : 1,926,969.33 = 485,729.72 : x
  2. Step 2: Convert to fraction form
    1,284,465.86/1,926,969.33 = 485,729.72/x
  3. Step 3: Cross multiply
    1,284,465.86x = 1,926,969.33 × 485,729.72
  4. Step 4: Simplify right side
    1,284,465.86x = 935,986,273,109.49
  5. Step 5: Solve for x
    x = 935,986,273,109.49/1,284,465.86
  6. Step 6: Final answer
    x = 728,696.89

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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.