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Finding the Fourth Proportional to 550,486.24, 759,491.56 and 320,991.60

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Solution

The fourth proportional to 550,486.24, 759,491.56 and 320,991.60 is: 442,863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,486.24 : 759,491.56 = 320,991.60 : x
  2. Step 2: Convert to fraction form
    550,486.24/759,491.56 = 320,991.60/x
  3. Step 3: Cross multiply
    550,486.24x = 759,491.56 × 320,991.60
  4. Step 4: Simplify right side
    550,486.24x = 243,790,411,030.90
  5. Step 5: Solve for x
    x = 243,790,411,030.90/550,486.24
  6. Step 6: Final answer
    x = 442,863.77

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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.