Home / 1,318,902.51-1,977,320.23-520,781.47

Finding the Fourth Proportional to 1,318,902.51, 1,977,320.23 and 520,781.47

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Solution

The fourth proportional to 1,318,902.51, 1,977,320.23 and 520,781.47 is: 780,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,902.51 : 1,977,320.23 = 520,781.47 : x
  2. Step 2: Convert to fraction form
    1,318,902.51/1,977,320.23 = 520,781.47/x
  3. Step 3: Cross multiply
    1,318,902.51x = 1,977,320.23 × 520,781.47
  4. Step 4: Simplify right side
    1,318,902.51x = 1,029,751,729,794.88
  5. Step 5: Solve for x
    x = 1,029,751,729,794.88/1,318,902.51
  6. Step 6: Final answer
    x = 780,764.10

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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.