Home / 521,391.72-780,764.04-436,929.84

Finding the Fourth Proportional to 521,391.72, 780,764.04 and 436,929.84

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Solution

The fourth proportional to 521,391.72, 780,764.04 and 436,929.84 is: 654,285.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,391.72 : 780,764.04 = 436,929.84 : x
  2. Step 2: Convert to fraction form
    521,391.72/780,764.04 = 436,929.84/x
  3. Step 3: Cross multiply
    521,391.72x = 780,764.04 × 436,929.84
  4. Step 4: Simplify right side
    521,391.72x = 341,139,107,074.95
  5. Step 5: Solve for x
    x = 341,139,107,074.95/521,391.72
  6. Step 6: Final answer
    x = 654,285.62

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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.