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Finding the Fourth Proportional to 654,969.66, 903,809.78 and 368,434.60

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Solution

The fourth proportional to 654,969.66, 903,809.78 and 368,434.60 is: 508,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,969.66 : 903,809.78 = 368,434.60 : x
  2. Step 2: Convert to fraction form
    654,969.66/903,809.78 = 368,434.60/x
  3. Step 3: Cross multiply
    654,969.66x = 903,809.78 × 368,434.60
  4. Step 4: Simplify right side
    654,969.66x = 332,994,794,770.39
  5. Step 5: Solve for x
    x = 332,994,794,770.39/654,969.66
  6. Step 6: Final answer
    x = 508,412.55

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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.