Home / 1,223,873.76-1,689,188.76-782,065.92

Finding the Fourth Proportional to 1,223,873.76, 1,689,188.76 and 782,065.92

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Solution

The fourth proportional to 1,223,873.76, 1,689,188.76 and 782,065.92 is: 1,079,406.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,873.76 : 1,689,188.76 = 782,065.92 : x
  2. Step 2: Convert to fraction form
    1,223,873.76/1,689,188.76 = 782,065.92/x
  3. Step 3: Cross multiply
    1,223,873.76x = 1,689,188.76 × 782,065.92
  4. Step 4: Simplify right side
    1,223,873.76x = 1,321,056,961,643.06
  5. Step 5: Solve for x
    x = 1,321,056,961,643.06/1,223,873.76
  6. Step 6: Final answer
    x = 1,079,406.23

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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.