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Finding the Fourth Proportional to 978,523.62, 1,349,112.87 and 633,750.54

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Solution

The fourth proportional to 978,523.62, 1,349,112.87 and 633,750.54 is: 873,766.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,523.62 : 1,349,112.87 = 633,750.54 : x
  2. Step 2: Convert to fraction form
    978,523.62/1,349,112.87 = 633,750.54/x
  3. Step 3: Cross multiply
    978,523.62x = 1,349,112.87 × 633,750.54
  4. Step 4: Simplify right side
    978,523.62x = 855,001,009,883.45
  5. Step 5: Solve for x
    x = 855,001,009,883.45/978,523.62
  6. Step 6: Final answer
    x = 873,766.35

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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.