Home / 1,200,409.69-1,656,503.44-656,439.61

Finding the Fourth Proportional to 1,200,409.69, 1,656,503.44 and 656,439.61

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Solution

The fourth proportional to 1,200,409.69, 1,656,503.44 and 656,439.61 is: 905,852.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,409.69 : 1,656,503.44 = 656,439.61 : x
  2. Step 2: Convert to fraction form
    1,200,409.69/1,656,503.44 = 656,439.61/x
  3. Step 3: Cross multiply
    1,200,409.69x = 1,656,503.44 × 656,439.61
  4. Step 4: Simplify right side
    1,200,409.69x = 1,087,394,472,117.26
  5. Step 5: Solve for x
    x = 1,087,394,472,117.26/1,200,409.69
  6. Step 6: Final answer
    x = 905,852.79

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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.