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Finding the Fourth Proportional to 882,806.72, 1,218,313.33 and 520,245.86

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Solution

The fourth proportional to 882,806.72, 1,218,313.33 and 520,245.86 is: 717,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,806.72 : 1,218,313.33 = 520,245.86 : x
  2. Step 2: Convert to fraction form
    882,806.72/1,218,313.33 = 520,245.86/x
  3. Step 3: Cross multiply
    882,806.72x = 1,218,313.33 × 520,245.86
  4. Step 4: Simplify right side
    882,806.72x = 633,822,458,723.13
  5. Step 5: Solve for x
    x = 633,822,458,723.13/882,806.72
  6. Step 6: Final answer
    x = 717,962.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.