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Finding the Fourth Proportional to 610,635.60, 842,647.32 and 338,679.40

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Solution

The fourth proportional to 610,635.60, 842,647.32 and 338,679.40 is: 467,361.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,635.60 : 842,647.32 = 338,679.40 : x
  2. Step 2: Convert to fraction form
    610,635.60/842,647.32 = 338,679.40/x
  3. Step 3: Cross multiply
    610,635.60x = 842,647.32 × 338,679.40
  4. Step 4: Simplify right side
    610,635.60x = 285,387,288,749.21
  5. Step 5: Solve for x
    x = 285,387,288,749.21/610,635.60
  6. Step 6: Final answer
    x = 467,361.04

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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.