Home / 1,291,976.19-1,782,909.81-719,016.21

Finding the Fourth Proportional to 1,291,976.19, 1,782,909.81 and 719,016.21

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Solution

The fourth proportional to 1,291,976.19, 1,782,909.81 and 719,016.21 is: 992,232.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,976.19 : 1,782,909.81 = 719,016.21 : x
  2. Step 2: Convert to fraction form
    1,291,976.19/1,782,909.81 = 719,016.21/x
  3. Step 3: Cross multiply
    1,291,976.19x = 1,782,909.81 × 719,016.21
  4. Step 4: Simplify right side
    1,291,976.19x = 1,281,941,054,358.02
  5. Step 5: Solve for x
    x = 1,281,941,054,358.02/1,291,976.19
  6. Step 6: Final answer
    x = 992,232.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.