Home / 830,133.11-1,245,200.00-640,869.79

Finding the Fourth Proportional to 830,133.11, 1,245,200.00 and 640,869.79

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Solution

The fourth proportional to 830,133.11, 1,245,200.00 and 640,869.79 is: 961,304.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,133.11 : 1,245,200.00 = 640,869.79 : x
  2. Step 2: Convert to fraction form
    830,133.11/1,245,200.00 = 640,869.79/x
  3. Step 3: Cross multiply
    830,133.11x = 1,245,200.00 × 640,869.79
  4. Step 4: Simplify right side
    830,133.11x = 798,011,056,190.65
  5. Step 5: Solve for x
    x = 798,011,056,190.65/830,133.11
  6. Step 6: Final answer
    x = 961,304.94

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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.