Home / 1,991,379.60-2,987,069.40-661,683.60

Finding the Fourth Proportional to 1,991,379.60, 2,987,069.40 and 661,683.60

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Solution

The fourth proportional to 1,991,379.60, 2,987,069.40 and 661,683.60 is: 992,525.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,379.60 : 2,987,069.40 = 661,683.60 : x
  2. Step 2: Convert to fraction form
    1,991,379.60/2,987,069.40 = 661,683.60/x
  3. Step 3: Cross multiply
    1,991,379.60x = 2,987,069.40 × 661,683.60
  4. Step 4: Simplify right side
    1,991,379.60x = 1,976,494,834,041.84
  5. Step 5: Solve for x
    x = 1,976,494,834,041.84/1,991,379.60
  6. Step 6: Final answer
    x = 992,525.40

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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.