Home / 1,123,321.80-1,684,982.70-645,024.90

Finding the Fourth Proportional to 1,123,321.80, 1,684,982.70 and 645,024.90

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Solution

The fourth proportional to 1,123,321.80, 1,684,982.70 and 645,024.90 is: 967,537.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,321.80 : 1,684,982.70 = 645,024.90 : x
  2. Step 2: Convert to fraction form
    1,123,321.80/1,684,982.70 = 645,024.90/x
  3. Step 3: Cross multiply
    1,123,321.80x = 1,684,982.70 × 645,024.90
  4. Step 4: Simplify right side
    1,123,321.80x = 1,086,855,797,569.23
  5. Step 5: Solve for x
    x = 1,086,855,797,569.23/1,123,321.80
  6. Step 6: Final answer
    x = 967,537.35

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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.