Home / 1,272,960.13-1,909,031.79-419,839.98

Finding the Fourth Proportional to 1,272,960.13, 1,909,031.79 and 419,839.98

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Solution

The fourth proportional to 1,272,960.13, 1,909,031.79 and 419,839.98 is: 629,625.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,960.13 : 1,909,031.79 = 419,839.98 : x
  2. Step 2: Convert to fraction form
    1,272,960.13/1,909,031.79 = 419,839.98/x
  3. Step 3: Cross multiply
    1,272,960.13x = 1,909,031.79 × 419,839.98
  4. Step 4: Simplify right side
    1,272,960.13x = 801,487,868,532.96
  5. Step 5: Solve for x
    x = 801,487,868,532.96/1,272,960.13
  6. Step 6: Final answer
    x = 629,625.27

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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.