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Finding the Fourth Proportional to 606,779, 837,355.38 and 338,507

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Solution

The fourth proportional to 606,779, 837,355.38 and 338,507 is: 467,139.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,779 : 837,355.38 = 338,507 : x
  2. Step 2: Convert to fraction form
    606,779/837,355.38 = 338,507/x
  3. Step 3: Cross multiply
    606,779x = 837,355.38 × 338,507
  4. Step 4: Simplify right side
    606,779x = 283,450,657,617.66
  5. Step 5: Solve for x
    x = 283,450,657,617.66/606,779
  6. Step 6: Final answer
    x = 467,139.86

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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.