Home / 1,678,987.60-2,519,095.80-681,816.40

Finding the Fourth Proportional to 1,678,987.60, 2,519,095.80 and 681,816.40

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Solution

The fourth proportional to 1,678,987.60, 2,519,095.80 and 681,816.40 is: 1,022,974.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,987.60 : 2,519,095.80 = 681,816.40 : x
  2. Step 2: Convert to fraction form
    1,678,987.60/2,519,095.80 = 681,816.40/x
  3. Step 3: Cross multiply
    1,678,987.60x = 2,519,095.80 × 681,816.40
  4. Step 4: Simplify right side
    1,678,987.60x = 1,717,560,829,611.12
  5. Step 5: Solve for x
    x = 1,717,560,829,611.12/1,678,987.60
  6. Step 6: Final answer
    x = 1,022,974.10

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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.