Home / 1,212,785.70-1,818,012.15-942,764.10

Finding the Fourth Proportional to 1,212,785.70, 1,818,012.15 and 942,764.10

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Solution

The fourth proportional to 1,212,785.70, 1,818,012.15 and 942,764.10 is: 1,413,239.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,785.70 : 1,818,012.15 = 942,764.10 : x
  2. Step 2: Convert to fraction form
    1,212,785.70/1,818,012.15 = 942,764.10/x
  3. Step 3: Cross multiply
    1,212,785.70x = 1,818,012.15 × 942,764.10
  4. Step 4: Simplify right side
    1,212,785.70x = 1,713,956,588,383.82
  5. Step 5: Solve for x
    x = 1,713,956,588,383.82/1,212,785.70
  6. Step 6: Final answer
    x = 1,413,239.44

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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.