Home / 818,664.86-1,227,919.16-386,281.76

Finding the Fourth Proportional to 818,664.86, 1,227,919.16 and 386,281.76

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Solution

The fourth proportional to 818,664.86, 1,227,919.16 and 386,281.76 is: 579,385.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,664.86 : 1,227,919.16 = 386,281.76 : x
  2. Step 2: Convert to fraction form
    818,664.86/1,227,919.16 = 386,281.76/x
  3. Step 3: Cross multiply
    818,664.86x = 1,227,919.16 × 386,281.76
  4. Step 4: Simplify right side
    818,664.86x = 474,322,766,191.52
  5. Step 5: Solve for x
    x = 474,322,766,191.52/818,664.86
  6. Step 6: Final answer
    x = 579,385.76

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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.