Home / 1,297,857.90-1,791,080.01-717,118.45

Finding the Fourth Proportional to 1,297,857.90, 1,791,080.01 and 717,118.45

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Solution

The fourth proportional to 1,297,857.90, 1,791,080.01 and 717,118.45 is: 989,643.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,857.90 : 1,791,080.01 = 717,118.45 : x
  2. Step 2: Convert to fraction form
    1,297,857.90/1,791,080.01 = 717,118.45/x
  3. Step 3: Cross multiply
    1,297,857.90x = 1,791,080.01 × 717,118.45
  4. Step 4: Simplify right side
    1,297,857.90x = 1,284,416,511,641.78
  5. Step 5: Solve for x
    x = 1,284,416,511,641.78/1,297,857.90
  6. Step 6: Final answer
    x = 989,643.41

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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.