Home / 1,555,101.80-2,332,652.70-1,289,381.30

Finding the Fourth Proportional to 1,555,101.80, 2,332,652.70 and 1,289,381.30

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Solution

The fourth proportional to 1,555,101.80, 2,332,652.70 and 1,289,381.30 is: 1,934,071.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,101.80 : 2,332,652.70 = 1,289,381.30 : x
  2. Step 2: Convert to fraction form
    1,555,101.80/2,332,652.70 = 1,289,381.30/x
  3. Step 3: Cross multiply
    1,555,101.80x = 2,332,652.70 × 1,289,381.30
  4. Step 4: Simplify right side
    1,555,101.80x = 3,007,678,770,774.51
  5. Step 5: Solve for x
    x = 3,007,678,770,774.51/1,555,101.80
  6. Step 6: Final answer
    x = 1,934,071.95

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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.