Home / 812,521.96-1,218,036.48-279,916.36

Finding the Fourth Proportional to 812,521.96, 1,218,036.48 and 279,916.36

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Solution

The fourth proportional to 812,521.96, 1,218,036.48 and 279,916.36 is: 419,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,521.96 : 1,218,036.48 = 279,916.36 : x
  2. Step 2: Convert to fraction form
    812,521.96/1,218,036.48 = 279,916.36/x
  3. Step 3: Cross multiply
    812,521.96x = 1,218,036.48 × 279,916.36
  4. Step 4: Simplify right side
    812,521.96x = 340,948,337,828.81
  5. Step 5: Solve for x
    x = 340,948,337,828.81/812,521.96
  6. Step 6: Final answer
    x = 419,617.38

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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.