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Finding the Fourth Proportional to 654,887.40, 903,797.10 and 368,390.40

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Solution

The fourth proportional to 654,887.40, 903,797.10 and 368,390.40 is: 508,408.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,887.40 : 903,797.10 = 368,390.40 : x
  2. Step 2: Convert to fraction form
    654,887.40/903,797.10 = 368,390.40/x
  3. Step 3: Cross multiply
    654,887.40x = 903,797.10 × 368,390.40
  4. Step 4: Simplify right side
    654,887.40x = 332,950,175,187.84
  5. Step 5: Solve for x
    x = 332,950,175,187.84/654,887.40
  6. Step 6: Final answer
    x = 508,408.28

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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.