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Finding the Fourth Proportional to 654,135.60, 980,474.40 and 254,643.60

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Solution

The fourth proportional to 654,135.60, 980,474.40 and 254,643.60 is: 381,681.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,135.60 : 980,474.40 = 254,643.60 : x
  2. Step 2: Convert to fraction form
    654,135.60/980,474.40 = 254,643.60/x
  3. Step 3: Cross multiply
    654,135.60x = 980,474.40 × 254,643.60
  4. Step 4: Simplify right side
    654,135.60x = 249,671,530,923.84
  5. Step 5: Solve for x
    x = 249,671,530,923.84/654,135.60
  6. Step 6: Final answer
    x = 381,681.61

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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.