Home / 1,639,556.40-2,459,680.20-692,439.60

Finding the Fourth Proportional to 1,639,556.40, 2,459,680.20 and 692,439.60

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Solution

The fourth proportional to 1,639,556.40, 2,459,680.20 and 692,439.60 is: 1,038,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639,556.40 : 2,459,680.20 = 692,439.60 : x
  2. Step 2: Convert to fraction form
    1,639,556.40/2,459,680.20 = 692,439.60/x
  3. Step 3: Cross multiply
    1,639,556.40x = 2,459,680.20 × 692,439.60
  4. Step 4: Simplify right side
    1,639,556.40x = 1,703,179,973,815.92
  5. Step 5: Solve for x
    x = 1,703,179,973,815.92/1,639,556.40
  6. Step 6: Final answer
    x = 1,038,805.36

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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.