Home / 1,991,813.80-2,987,720.70-662,117.80

Finding the Fourth Proportional to 1,991,813.80, 2,987,720.70 and 662,117.80

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Solution

The fourth proportional to 1,991,813.80, 2,987,720.70 and 662,117.80 is: 993,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,813.80 : 2,987,720.70 = 662,117.80 : x
  2. Step 2: Convert to fraction form
    1,991,813.80/2,987,720.70 = 662,117.80/x
  3. Step 3: Cross multiply
    1,991,813.80x = 2,987,720.70 × 662,117.80
  4. Step 4: Simplify right side
    1,991,813.80x = 1,978,223,056,898.46
  5. Step 5: Solve for x
    x = 1,978,223,056,898.46/1,991,813.80
  6. Step 6: Final answer
    x = 993,176.70

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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.