Home / 1,318,458.60-1,977,428.70-431,994.60

Finding the Fourth Proportional to 1,318,458.60, 1,977,428.70 and 431,994.60

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Solution

The fourth proportional to 1,318,458.60, 1,977,428.70 and 431,994.60 is: 647,906.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,458.60 : 1,977,428.70 = 431,994.60 : x
  2. Step 2: Convert to fraction form
    1,318,458.60/1,977,428.70 = 431,994.60/x
  3. Step 3: Cross multiply
    1,318,458.60x = 1,977,428.70 × 431,994.60
  4. Step 4: Simplify right side
    1,318,458.60x = 854,238,520,285.02
  5. Step 5: Solve for x
    x = 854,238,520,285.02/1,318,458.60
  6. Step 6: Final answer
    x = 647,906.97

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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.