Home / 1,318,428.60-1,979,975.70-1,019,635.80

Finding the Fourth Proportional to 1,318,428.60, 1,979,975.70 and 1,019,635.80

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Solution

The fourth proportional to 1,318,428.60, 1,979,975.70 and 1,019,635.80 is: 1,531,257.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,428.60 : 1,979,975.70 = 1,019,635.80 : x
  2. Step 2: Convert to fraction form
    1,318,428.60/1,979,975.70 = 1,019,635.80/x
  3. Step 3: Cross multiply
    1,318,428.60x = 1,979,975.70 × 1,019,635.80
  4. Step 4: Simplify right side
    1,318,428.60x = 2,018,854,106,850.06
  5. Step 5: Solve for x
    x = 2,018,854,106,850.06/1,318,428.60
  6. Step 6: Final answer
    x = 1,531,257.82

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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.