Home / 1,419,005.70-2,128,508.55-1,391,012.10

Finding the Fourth Proportional to 1,419,005.70, 2,128,508.55 and 1,391,012.10

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Solution

The fourth proportional to 1,419,005.70, 2,128,508.55 and 1,391,012.10 is: 2,086,518.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,005.70 : 2,128,508.55 = 1,391,012.10 : x
  2. Step 2: Convert to fraction form
    1,419,005.70/2,128,508.55 = 1,391,012.10/x
  3. Step 3: Cross multiply
    1,419,005.70x = 2,128,508.55 × 1,391,012.10
  4. Step 4: Simplify right side
    1,419,005.70x = 2,960,781,148,003.46
  5. Step 5: Solve for x
    x = 2,960,781,148,003.46/1,419,005.70
  6. Step 6: Final answer
    x = 2,086,518.15

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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.