Home / 1,222,953.28-1,687,619.16-679,123.78

Finding the Fourth Proportional to 1,222,953.28, 1,687,619.16 and 679,123.78

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Solution

The fourth proportional to 1,222,953.28, 1,687,619.16 and 679,123.78 is: 937,159.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,953.28 : 1,687,619.16 = 679,123.78 : x
  2. Step 2: Convert to fraction form
    1,222,953.28/1,687,619.16 = 679,123.78/x
  3. Step 3: Cross multiply
    1,222,953.28x = 1,687,619.16 × 679,123.78
  4. Step 4: Simplify right side
    1,222,953.28x = 1,146,102,303,139.62
  5. Step 5: Solve for x
    x = 1,146,102,303,139.62/1,222,953.28
  6. Step 6: Final answer
    x = 937,159.52

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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.