Home / 2,142,842.19-2,956,280.40-1,224,578.70

Finding the Fourth Proportional to 2,142,842.19, 2,956,280.40 and 1,224,578.70

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Solution

The fourth proportional to 2,142,842.19, 2,956,280.40 and 1,224,578.70 is: 1,689,437.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142,842.19 : 2,956,280.40 = 1,224,578.70 : x
  2. Step 2: Convert to fraction form
    2,142,842.19/2,956,280.40 = 1,224,578.70/x
  3. Step 3: Cross multiply
    2,142,842.19x = 2,956,280.40 × 1,224,578.70
  4. Step 4: Simplify right side
    2,142,842.19x = 3,620,198,009,067.48
  5. Step 5: Solve for x
    x = 3,620,198,009,067.48/2,142,842.19
  6. Step 6: Final answer
    x = 1,689,437.53

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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.