Home / 1,421,712.74-2,123,489.86-1,286,567.30

Finding the Fourth Proportional to 1,421,712.74, 2,123,489.86 and 1,286,567.30

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Solution

The fourth proportional to 1,421,712.74, 2,123,489.86 and 1,286,567.30 is: 1,921,634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,712.74 : 2,123,489.86 = 1,286,567.30 : x
  2. Step 2: Convert to fraction form
    1,421,712.74/2,123,489.86 = 1,286,567.30/x
  3. Step 3: Cross multiply
    1,421,712.74x = 2,123,489.86 × 1,286,567.30
  4. Step 4: Simplify right side
    1,421,712.74x = 2,732,012,615,757.58
  5. Step 5: Solve for x
    x = 2,732,012,615,757.58/1,421,712.74
  6. Step 6: Final answer
    x = 1,921,634.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.