Home / 1,292,262.16-1,783,017.12-1,086,313.72

Finding the Fourth Proportional to 1,292,262.16, 1,783,017.12 and 1,086,313.72

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Solution

The fourth proportional to 1,292,262.16, 1,783,017.12 and 1,086,313.72 is: 1,498,856.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,262.16 : 1,783,017.12 = 1,086,313.72 : x
  2. Step 2: Convert to fraction form
    1,292,262.16/1,783,017.12 = 1,086,313.72/x
  3. Step 3: Cross multiply
    1,292,262.16x = 1,783,017.12 × 1,086,313.72
  4. Step 4: Simplify right side
    1,292,262.16x = 1,936,915,960,450.89
  5. Step 5: Solve for x
    x = 1,936,915,960,450.89/1,292,262.16
  6. Step 6: Final answer
    x = 1,498,856.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.