Home / 1,320,495.95-1,979,431.56-787,217.87

Finding the Fourth Proportional to 1,320,495.95, 1,979,431.56 and 787,217.87

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Solution

The fourth proportional to 1,320,495.95, 1,979,431.56 and 787,217.87 is: 1,180,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,495.95 : 1,979,431.56 = 787,217.87 : x
  2. Step 2: Convert to fraction form
    1,320,495.95/1,979,431.56 = 787,217.87/x
  3. Step 3: Cross multiply
    1,320,495.95x = 1,979,431.56 × 787,217.87
  4. Step 4: Simplify right side
    1,320,495.95x = 1,558,243,886,576.82
  5. Step 5: Solve for x
    x = 1,558,243,886,576.82/1,320,495.95
  6. Step 6: Final answer
    x = 1,180,044.43

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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.