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Finding the Fourth Proportional to 882,694.86, 1,218,107.53 and 520,134

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Solution

The fourth proportional to 882,694.86, 1,218,107.53 and 520,134 is: 717,778.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,694.86 : 1,218,107.53 = 520,134 : x
  2. Step 2: Convert to fraction form
    882,694.86/1,218,107.53 = 520,134/x
  3. Step 3: Cross multiply
    882,694.86x = 1,218,107.53 × 520,134
  4. Step 4: Simplify right side
    882,694.86x = 633,579,142,009.02
  5. Step 5: Solve for x
    x = 633,579,142,009.02/882,694.86
  6. Step 6: Final answer
    x = 717,778.22

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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.