Home / 1,290,538.85-1,780,932.56-717,574.01

Finding the Fourth Proportional to 1,290,538.85, 1,780,932.56 and 717,574.01

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Solution

The fourth proportional to 1,290,538.85, 1,780,932.56 and 717,574.01 is: 990,245.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,538.85 : 1,780,932.56 = 717,574.01 : x
  2. Step 2: Convert to fraction form
    1,290,538.85/1,780,932.56 = 717,574.01/x
  3. Step 3: Cross multiply
    1,290,538.85x = 1,780,932.56 × 717,574.01
  4. Step 4: Simplify right side
    1,290,538.85x = 1,277,950,906,126.23
  5. Step 5: Solve for x
    x = 1,277,950,906,126.23/1,290,538.85
  6. Step 6: Final answer
    x = 990,245.98

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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.