Home / 1,222,644.78-1,686,786.93-901,123.38

Finding the Fourth Proportional to 1,222,644.78, 1,686,786.93 and 901,123.38

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Solution

The fourth proportional to 1,222,644.78, 1,686,786.93 and 901,123.38 is: 1,243,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,644.78 : 1,686,786.93 = 901,123.38 : x
  2. Step 2: Convert to fraction form
    1,222,644.78/1,686,786.93 = 901,123.38/x
  3. Step 3: Cross multiply
    1,222,644.78x = 1,686,786.93 × 901,123.38
  4. Step 4: Simplify right side
    1,222,644.78x = 1,520,003,139,701.42
  5. Step 5: Solve for x
    x = 1,520,003,139,701.42/1,222,644.78
  6. Step 6: Final answer
    x = 1,243,209.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.