Home / 1,216,612.67-1,678,367.44-787,031.33

Finding the Fourth Proportional to 1,216,612.67, 1,678,367.44 and 787,031.33

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Solution

The fourth proportional to 1,216,612.67, 1,678,367.44 and 787,031.33 is: 1,085,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,612.67 : 1,678,367.44 = 787,031.33 : x
  2. Step 2: Convert to fraction form
    1,216,612.67/1,678,367.44 = 787,031.33/x
  3. Step 3: Cross multiply
    1,216,612.67x = 1,678,367.44 × 787,031.33
  4. Step 4: Simplify right side
    1,216,612.67x = 1,320,927,763,711.60
  5. Step 5: Solve for x
    x = 1,320,927,763,711.60/1,216,612.67
  6. Step 6: Final answer
    x = 1,085,742.24

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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.