Home / 1,318,884.60-1,978,845.30-520,030.20

Finding the Fourth Proportional to 1,318,884.60, 1,978,845.30 and 520,030.20

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Solution

The fourth proportional to 1,318,884.60, 1,978,845.30 and 520,030.20 is: 780,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,884.60 : 1,978,845.30 = 520,030.20 : x
  2. Step 2: Convert to fraction form
    1,318,884.60/1,978,845.30 = 520,030.20/x
  3. Step 3: Cross multiply
    1,318,884.60x = 1,978,845.30 × 520,030.20
  4. Step 4: Simplify right side
    1,318,884.60x = 1,029,059,317,128.06
  5. Step 5: Solve for x
    x = 1,029,059,317,128.06/1,318,884.60
  6. Step 6: Final answer
    x = 780,249.70

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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.