Home / 1,291,207.80-1,936,811.70-392,642.40

Finding the Fourth Proportional to 1,291,207.80, 1,936,811.70 and 392,642.40

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Solution

The fourth proportional to 1,291,207.80, 1,936,811.70 and 392,642.40 is: 588,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,207.80 : 1,936,811.70 = 392,642.40 : x
  2. Step 2: Convert to fraction form
    1,291,207.80/1,936,811.70 = 392,642.40/x
  3. Step 3: Cross multiply
    1,291,207.80x = 1,936,811.70 × 392,642.40
  4. Step 4: Simplify right side
    1,291,207.80x = 760,474,394,236.08
  5. Step 5: Solve for x
    x = 760,474,394,236.08/1,291,207.80
  6. Step 6: Final answer
    x = 588,963.60

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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.