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Finding the Fourth Proportional to 654,878.88, 903,731.56 and 368,399.18

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Solution

The fourth proportional to 654,878.88, 903,731.56 and 368,399.18 is: 508,390.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,878.88 : 903,731.56 = 368,399.18 : x
  2. Step 2: Convert to fraction form
    654,878.88/903,731.56 = 368,399.18/x
  3. Step 3: Cross multiply
    654,878.88x = 903,731.56 × 368,399.18
  4. Step 4: Simplify right side
    654,878.88x = 332,933,966,982.45
  5. Step 5: Solve for x
    x = 332,933,966,982.45/654,878.88
  6. Step 6: Final answer
    x = 508,390.14

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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.