Home / 1,390,444.38-2,085,141.69-641,965.50

Finding the Fourth Proportional to 1,390,444.38, 2,085,141.69 and 641,965.50

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Solution

The fourth proportional to 1,390,444.38, 2,085,141.69 and 641,965.50 is: 962,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,444.38 : 2,085,141.69 = 641,965.50 : x
  2. Step 2: Convert to fraction form
    1,390,444.38/2,085,141.69 = 641,965.50/x
  3. Step 3: Cross multiply
    1,390,444.38x = 2,085,141.69 × 641,965.50
  4. Step 4: Simplify right side
    1,390,444.38x = 1,338,589,027,591.70
  5. Step 5: Solve for x
    x = 1,338,589,027,591.70/1,390,444.38
  6. Step 6: Final answer
    x = 962,705.91

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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.