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Finding the Fourth Proportional to 978,256.81, 1,467,394.67 and 370,881.79

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Solution

The fourth proportional to 978,256.81, 1,467,394.67 and 370,881.79 is: 556,326.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,256.81 : 1,467,394.67 = 370,881.79 : x
  2. Step 2: Convert to fraction form
    978,256.81/1,467,394.67 = 370,881.79/x
  3. Step 3: Cross multiply
    978,256.81x = 1,467,394.67 × 370,881.79
  4. Step 4: Simplify right side
    978,256.81x = 544,229,958,583.21
  5. Step 5: Solve for x
    x = 544,229,958,583.21/978,256.81
  6. Step 6: Final answer
    x = 556,326.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.