Home / 1,318,906.80-1,977,326.70-520,785.76

Finding the Fourth Proportional to 1,318,906.80, 1,977,326.70 and 520,785.76

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Solution

The fourth proportional to 1,318,906.80, 1,977,326.70 and 520,785.76 is: 780,770.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,906.80 : 1,977,326.70 = 520,785.76 : x
  2. Step 2: Convert to fraction form
    1,318,906.80/1,977,326.70 = 520,785.76/x
  3. Step 3: Cross multiply
    1,318,906.80x = 1,977,326.70 × 520,785.76
  4. Step 4: Simplify right side
    1,318,906.80x = 1,029,763,588,227.79
  5. Step 5: Solve for x
    x = 1,029,763,588,227.79/1,318,906.80
  6. Step 6: Final answer
    x = 780,770.55

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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.