Home / 1,238,543.35-1,857,369.30-428,707.73

Finding the Fourth Proportional to 1,238,543.35, 1,857,369.30 and 428,707.73

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Solution

The fourth proportional to 1,238,543.35, 1,857,369.30 and 428,707.73 is: 642,907.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,543.35 : 1,857,369.30 = 428,707.73 : x
  2. Step 2: Convert to fraction form
    1,238,543.35/1,857,369.30 = 428,707.73/x
  3. Step 3: Cross multiply
    1,238,543.35x = 1,857,369.30 × 428,707.73
  4. Step 4: Simplify right side
    1,238,543.35x = 796,268,579,410.46
  5. Step 5: Solve for x
    x = 796,268,579,410.46/1,238,543.35
  6. Step 6: Final answer
    x = 642,907.32

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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.