Home / 903,293.09-1,243,415.72-780,729.56

Finding the Fourth Proportional to 903,293.09, 1,243,415.72 and 780,729.56

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Solution

The fourth proportional to 903,293.09, 1,243,415.72 and 780,729.56 is: 1,074,702.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,293.09 : 1,243,415.72 = 780,729.56 : x
  2. Step 2: Convert to fraction form
    903,293.09/1,243,415.72 = 780,729.56/x
  3. Step 3: Cross multiply
    903,293.09x = 1,243,415.72 × 780,729.56
  4. Step 4: Simplify right side
    903,293.09x = 970,771,404,069.04
  5. Step 5: Solve for x
    x = 970,771,404,069.04/903,293.09
  6. Step 6: Final answer
    x = 1,074,702.57

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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.