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Finding the Fourth Proportional to 550,414.34, 759,579.93 and 320,965.23

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Solution

The fourth proportional to 550,414.34, 759,579.93 and 320,965.23 is: 442,936.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,414.34 : 759,579.93 = 320,965.23 : x
  2. Step 2: Convert to fraction form
    550,414.34/759,579.93 = 320,965.23/x
  3. Step 3: Cross multiply
    550,414.34x = 759,579.93 × 320,965.23
  4. Step 4: Simplify right side
    550,414.34x = 243,798,749,784.26
  5. Step 5: Solve for x
    x = 243,798,749,784.26/550,414.34
  6. Step 6: Final answer
    x = 442,936.77

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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.