Home / 812,075.38-1,217,427.92-511,894.14

Finding the Fourth Proportional to 812,075.38, 1,217,427.92 and 511,894.14

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Solution

The fourth proportional to 812,075.38, 1,217,427.92 and 511,894.14 is: 767,409.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,075.38 : 1,217,427.92 = 511,894.14 : x
  2. Step 2: Convert to fraction form
    812,075.38/1,217,427.92 = 511,894.14/x
  3. Step 3: Cross multiply
    812,075.38x = 1,217,427.92 × 511,894.14
  4. Step 4: Simplify right side
    812,075.38x = 623,194,218,120.39
  5. Step 5: Solve for x
    x = 623,194,218,120.39/812,075.38
  6. Step 6: Final answer
    x = 767,409.32

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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.