Home / 1,286,298.84-1,929,464.58-487,365.78

Finding the Fourth Proportional to 1,286,298.84, 1,929,464.58 and 487,365.78

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Solution

The fourth proportional to 1,286,298.84, 1,929,464.58 and 487,365.78 is: 731,054.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,298.84 : 1,929,464.58 = 487,365.78 : x
  2. Step 2: Convert to fraction form
    1,286,298.84/1,929,464.58 = 487,365.78/x
  3. Step 3: Cross multiply
    1,286,298.84x = 1,929,464.58 × 487,365.78
  4. Step 4: Simplify right side
    1,286,298.84x = 940,355,010,014.07
  5. Step 5: Solve for x
    x = 940,355,010,014.07/1,286,298.84
  6. Step 6: Final answer
    x = 731,054.85

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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.