Home / 812,107.61-1,217,476.45-511,926.67

Finding the Fourth Proportional to 812,107.61, 1,217,476.45 and 511,926.67

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Solution

The fourth proportional to 812,107.61, 1,217,476.45 and 511,926.67 is: 767,458.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,107.61 : 1,217,476.45 = 511,926.67 : x
  2. Step 2: Convert to fraction form
    812,107.61/1,217,476.45 = 511,926.67/x
  3. Step 3: Cross multiply
    812,107.61x = 1,217,476.45 × 511,926.67
  4. Step 4: Simplify right side
    812,107.61x = 623,258,664,851.92
  5. Step 5: Solve for x
    x = 623,258,664,851.92/812,107.61
  6. Step 6: Final answer
    x = 767,458.22

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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.