Home / 1,225,503.72-1,691,140.60-709,174.89

Finding the Fourth Proportional to 1,225,503.72, 1,691,140.60 and 709,174.89

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Solution

The fourth proportional to 1,225,503.72, 1,691,140.60 and 709,174.89 is: 978,629.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,503.72 : 1,691,140.60 = 709,174.89 : x
  2. Step 2: Convert to fraction form
    1,225,503.72/1,691,140.60 = 709,174.89/x
  3. Step 3: Cross multiply
    1,225,503.72x = 1,691,140.60 × 709,174.89
  4. Step 4: Simplify right side
    1,225,503.72x = 1,199,314,438,750.89
  5. Step 5: Solve for x
    x = 1,199,314,438,750.89/1,225,503.72
  6. Step 6: Final answer
    x = 978,629.79

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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.