Home / 811,223.42-1,119,628.79-488,933.88

Finding the Fourth Proportional to 811,223.42, 1,119,628.79 and 488,933.88

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Solution

The fourth proportional to 811,223.42, 1,119,628.79 and 488,933.88 is: 674,813.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,223.42 : 1,119,628.79 = 488,933.88 : x
  2. Step 2: Convert to fraction form
    811,223.42/1,119,628.79 = 488,933.88/x
  3. Step 3: Cross multiply
    811,223.42x = 1,119,628.79 × 488,933.88
  4. Step 4: Simplify right side
    811,223.42x = 547,424,446,009.74
  5. Step 5: Solve for x
    x = 547,424,446,009.74/811,223.42
  6. Step 6: Final answer
    x = 674,813.42

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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.