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Finding the Fourth Proportional to 610,788.90, 842,893.77 and 338,874.63

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Solution

The fourth proportional to 610,788.90, 842,893.77 and 338,874.63 is: 467,649.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,788.90 : 842,893.77 = 338,874.63 : x
  2. Step 2: Convert to fraction form
    610,788.90/842,893.77 = 338,874.63/x
  3. Step 3: Cross multiply
    610,788.90x = 842,893.77 × 338,874.63
  4. Step 4: Simplify right side
    610,788.90x = 285,635,314,438.06
  5. Step 5: Solve for x
    x = 285,635,314,438.06/610,788.90
  6. Step 6: Final answer
    x = 467,649.81

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1.5x scale

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.