Home / 1,129,678.72-1,558,900.02-639,571.96

Finding the Fourth Proportional to 1,129,678.72, 1,558,900.02 and 639,571.96

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Solution

The fourth proportional to 1,129,678.72, 1,558,900.02 and 639,571.96 is: 882,577.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,678.72 : 1,558,900.02 = 639,571.96 : x
  2. Step 2: Convert to fraction form
    1,129,678.72/1,558,900.02 = 639,571.96/x
  3. Step 3: Cross multiply
    1,129,678.72x = 1,558,900.02 × 639,571.96
  4. Step 4: Simplify right side
    1,129,678.72x = 997,028,741,235.44
  5. Step 5: Solve for x
    x = 997,028,741,235.44/1,129,678.72
  6. Step 6: Final answer
    x = 882,577.25

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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.