Home / 1,538,420.21-2,123,019.80-859,356.71

Finding the Fourth Proportional to 1,538,420.21, 2,123,019.80 and 859,356.71

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Solution

The fourth proportional to 1,538,420.21, 2,123,019.80 and 859,356.71 is: 1,185,912.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,420.21 : 2,123,019.80 = 859,356.71 : x
  2. Step 2: Convert to fraction form
    1,538,420.21/2,123,019.80 = 859,356.71/x
  3. Step 3: Cross multiply
    1,538,420.21x = 2,123,019.80 × 859,356.71
  4. Step 4: Simplify right side
    1,538,420.21x = 1,824,431,311,698.77
  5. Step 5: Solve for x
    x = 1,824,431,311,698.77/1,538,420.21
  6. Step 6: Final answer
    x = 1,185,912.21

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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.