Home / 911,983.40-1,367,647.02-312,789.14

Finding the Fourth Proportional to 911,983.40, 1,367,647.02 and 312,789.14

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Solution

The fourth proportional to 911,983.40, 1,367,647.02 and 312,789.14 is: 469,071.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,983.40 : 1,367,647.02 = 312,789.14 : x
  2. Step 2: Convert to fraction form
    911,983.40/1,367,647.02 = 312,789.14/x
  3. Step 3: Cross multiply
    911,983.40x = 1,367,647.02 × 312,789.14
  4. Step 4: Simplify right side
    911,983.40x = 427,785,135,209.36
  5. Step 5: Solve for x
    x = 427,785,135,209.36/911,983.40
  6. Step 6: Final answer
    x = 469,071.19

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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.