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Finding the Fourth Proportional to 622,212.44, 933,874.95 and 318,813.58

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Solution

The fourth proportional to 622,212.44, 933,874.95 and 318,813.58 is: 478,505.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,212.44 : 933,874.95 = 318,813.58 : x
  2. Step 2: Convert to fraction form
    622,212.44/933,874.95 = 318,813.58/x
  3. Step 3: Cross multiply
    622,212.44x = 933,874.95 × 318,813.58
  4. Step 4: Simplify right side
    622,212.44x = 297,732,011,412.45
  5. Step 5: Solve for x
    x = 297,732,011,412.45/622,212.44
  6. Step 6: Final answer
    x = 478,505.40

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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.