Home / 825,877.61-1,239,267.93-320,458.51

Finding the Fourth Proportional to 825,877.61, 1,239,267.93 and 320,458.51

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Solution

The fourth proportional to 825,877.61, 1,239,267.93 and 320,458.51 is: 480,862.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,877.61 : 1,239,267.93 = 320,458.51 : x
  2. Step 2: Convert to fraction form
    825,877.61/1,239,267.93 = 320,458.51/x
  3. Step 3: Cross multiply
    825,877.61x = 1,239,267.93 × 320,458.51
  4. Step 4: Simplify right side
    825,877.61x = 397,133,954,338.58
  5. Step 5: Solve for x
    x = 397,133,954,338.58/825,877.61
  6. Step 6: Final answer
    x = 480,862.96

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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.