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Finding the Fourth Proportional to 978,265.80, 1,467,408.18 and 370,890.78

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Solution

The fourth proportional to 978,265.80, 1,467,408.18 and 370,890.78 is: 556,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,265.80 : 1,467,408.18 = 370,890.78 : x
  2. Step 2: Convert to fraction form
    978,265.80/1,467,408.18 = 370,890.78/x
  3. Step 3: Cross multiply
    978,265.80x = 1,467,408.18 × 370,890.78
  4. Step 4: Simplify right side
    978,265.80x = 544,248,164,458.58
  5. Step 5: Solve for x
    x = 544,248,164,458.58/978,265.80
  6. Step 6: Final answer
    x = 556,339.76

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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.