Home / 1,415,078.32-2,120,836.75-766,629.48

Finding the Fourth Proportional to 1,415,078.32, 2,120,836.75 and 766,629.48

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Solution

The fourth proportional to 1,415,078.32, 2,120,836.75 and 766,629.48 is: 1,148,979.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415,078.32 : 2,120,836.75 = 766,629.48 : x
  2. Step 2: Convert to fraction form
    1,415,078.32/2,120,836.75 = 766,629.48/x
  3. Step 3: Cross multiply
    1,415,078.32x = 2,120,836.75 × 766,629.48
  4. Step 4: Simplify right side
    1,415,078.32x = 1,625,895,974,817.39
  5. Step 5: Solve for x
    x = 1,625,895,974,817.39/1,415,078.32
  6. Step 6: Final answer
    x = 1,148,979.50

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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.