Home / 1,399,145.79-1,930,823.49-787,332.54

Finding the Fourth Proportional to 1,399,145.79, 1,930,823.49 and 787,332.54

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Solution

The fourth proportional to 1,399,145.79, 1,930,823.49 and 787,332.54 is: 1,086,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,145.79 : 1,930,823.49 = 787,332.54 : x
  2. Step 2: Convert to fraction form
    1,399,145.79/1,930,823.49 = 787,332.54/x
  3. Step 3: Cross multiply
    1,399,145.79x = 1,930,823.49 × 787,332.54
  4. Step 4: Simplify right side
    1,399,145.79x = 1,520,200,162,673.36
  5. Step 5: Solve for x
    x = 1,520,200,162,673.36/1,399,145.79
  6. Step 6: Final answer
    x = 1,086,520.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.