Home / 1,478,272.60-2,217,408.90-638,464.60

Finding the Fourth Proportional to 1,478,272.60, 2,217,408.90 and 638,464.60

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Solution

The fourth proportional to 1,478,272.60, 2,217,408.90 and 638,464.60 is: 957,696.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,272.60 : 2,217,408.90 = 638,464.60 : x
  2. Step 2: Convert to fraction form
    1,478,272.60/2,217,408.90 = 638,464.60/x
  3. Step 3: Cross multiply
    1,478,272.60x = 2,217,408.90 × 638,464.60
  4. Step 4: Simplify right side
    1,478,272.60x = 1,415,737,086,374.94
  5. Step 5: Solve for x
    x = 1,415,737,086,374.94/1,478,272.60
  6. Step 6: Final answer
    x = 957,696.90

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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.