Home / 1,238,666.82-1,857,554.72-428,831.34

Finding the Fourth Proportional to 1,238,666.82, 1,857,554.72 and 428,831.34

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Solution

The fourth proportional to 1,238,666.82, 1,857,554.72 and 428,831.34 is: 643,092.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,666.82 : 1,857,554.72 = 428,831.34 : x
  2. Step 2: Convert to fraction form
    1,238,666.82/1,857,554.72 = 428,831.34/x
  3. Step 3: Cross multiply
    1,238,666.82x = 1,857,554.72 × 428,831.34
  4. Step 4: Simplify right side
    1,238,666.82x = 796,577,679,700.93
  5. Step 5: Solve for x
    x = 796,577,679,700.93/1,238,666.82
  6. Step 6: Final answer
    x = 643,092.77

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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.