Home / 911,933.37-1,367,928-312,886.26

Finding the Fourth Proportional to 911,933.37, 1,367,928 and 312,886.26

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Solution

The fourth proportional to 911,933.37, 1,367,928 and 312,886.26 is: 469,338.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,933.37 : 1,367,928 = 312,886.26 : x
  2. Step 2: Convert to fraction form
    911,933.37/1,367,928 = 312,886.26/x
  3. Step 3: Cross multiply
    911,933.37x = 1,367,928 × 312,886.26
  4. Step 4: Simplify right side
    911,933.37x = 428,005,875,869.28
  5. Step 5: Solve for x
    x = 428,005,875,869.28/911,933.37
  6. Step 6: Final answer
    x = 469,338.98

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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.