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Finding the Fourth Proportional to 720,956.76, 1,081,599.06 and 383,819.76

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Solution

The fourth proportional to 720,956.76, 1,081,599.06 and 383,819.76 is: 575,816.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,956.76 : 1,081,599.06 = 383,819.76 : x
  2. Step 2: Convert to fraction form
    720,956.76/1,081,599.06 = 383,819.76/x
  3. Step 3: Cross multiply
    720,956.76x = 1,081,599.06 × 383,819.76
  4. Step 4: Simplify right side
    720,956.76x = 415,139,091,625.43
  5. Step 5: Solve for x
    x = 415,139,091,625.43/720,956.76
  6. Step 6: Final answer
    x = 575,816.91

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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.