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Finding the Fourth Proportional to 882,819, 1,218,421.44 and 520,126.92

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Solution

The fourth proportional to 882,819, 1,218,421.44 and 520,126.92 is: 717,852.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,819 : 1,218,421.44 = 520,126.92 : x
  2. Step 2: Convert to fraction form
    882,819/1,218,421.44 = 520,126.92/x
  3. Step 3: Cross multiply
    882,819x = 1,218,421.44 × 520,126.92
  4. Step 4: Simplify right side
    882,819x = 633,733,790,849.17
  5. Step 5: Solve for x
    x = 633,733,790,849.17/882,819
  6. Step 6: Final answer
    x = 717,852.46

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1.5x scale

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.