Home / 812,133.28-1,219,397.48-453,005.79

Finding the Fourth Proportional to 812,133.28, 1,219,397.48 and 453,005.79

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Solution

The fourth proportional to 812,133.28, 1,219,397.48 and 453,005.79 is: 680,176.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,133.28 : 1,219,397.48 = 453,005.79 : x
  2. Step 2: Convert to fraction form
    812,133.28/1,219,397.48 = 453,005.79/x
  3. Step 3: Cross multiply
    812,133.28x = 1,219,397.48 × 453,005.79
  4. Step 4: Simplify right side
    812,133.28x = 552,394,121,625.38
  5. Step 5: Solve for x
    x = 552,394,121,625.38/812,133.28
  6. Step 6: Final answer
    x = 680,176.69

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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.