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Finding the Fourth Proportional to 654,305.60, 980,729.40 and 254,813.60

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Solution

The fourth proportional to 654,305.60, 980,729.40 and 254,813.60 is: 381,936.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,305.60 : 980,729.40 = 254,813.60 : x
  2. Step 2: Convert to fraction form
    654,305.60/980,729.40 = 254,813.60/x
  3. Step 3: Cross multiply
    654,305.60x = 980,729.40 × 254,813.60
  4. Step 4: Simplify right side
    654,305.60x = 249,903,189,039.84
  5. Step 5: Solve for x
    x = 249,903,189,039.84/654,305.60
  6. Step 6: Final answer
    x = 381,936.50

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.