Home / 1,438,905.21-2,158,571.06-479,047.32

Finding the Fourth Proportional to 1,438,905.21, 2,158,571.06 and 479,047.32

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Solution

The fourth proportional to 1,438,905.21, 2,158,571.06 and 479,047.32 is: 718,641.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,905.21 : 2,158,571.06 = 479,047.32 : x
  2. Step 2: Convert to fraction form
    1,438,905.21/2,158,571.06 = 479,047.32/x
  3. Step 3: Cross multiply
    1,438,905.21x = 2,158,571.06 × 479,047.32
  4. Step 4: Simplify right side
    1,438,905.21x = 1,034,057,678,927.32
  5. Step 5: Solve for x
    x = 1,034,057,678,927.32/1,438,905.21
  6. Step 6: Final answer
    x = 718,641.97

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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.