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Finding the Fourth Proportional to 550,327.38, 759,460.08 and 320,878.40

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Solution

The fourth proportional to 550,327.38, 759,460.08 and 320,878.40 is: 442,817.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,327.38 : 759,460.08 = 320,878.40 : x
  2. Step 2: Convert to fraction form
    550,327.38/759,460.08 = 320,878.40/x
  3. Step 3: Cross multiply
    550,327.38x = 759,460.08 × 320,878.40
  4. Step 4: Simplify right side
    550,327.38x = 243,694,335,334.27
  5. Step 5: Solve for x
    x = 243,694,335,334.27/550,327.38
  6. Step 6: Final answer
    x = 442,817.03

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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.