Home / 1,326,866.80-1,989,121.84-517,063.64

Finding the Fourth Proportional to 1,326,866.80, 1,989,121.84 and 517,063.64

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Solution

The fourth proportional to 1,326,866.80, 1,989,121.84 and 517,063.64 is: 775,136.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,866.80 : 1,989,121.84 = 517,063.64 : x
  2. Step 2: Convert to fraction form
    1,326,866.80/1,989,121.84 = 517,063.64/x
  3. Step 3: Cross multiply
    1,326,866.80x = 1,989,121.84 × 517,063.64
  4. Step 4: Simplify right side
    1,326,866.80x = 1,028,502,578,993.90
  5. Step 5: Solve for x
    x = 1,028,502,578,993.90/1,326,866.80
  6. Step 6: Final answer
    x = 775,136.27

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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.