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Finding the Fourth Proportional to 654,979.74, 903,798.90 and 368,493.66

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Solution

The fourth proportional to 654,979.74, 903,798.90 and 368,493.66 is: 508,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,979.74 : 903,798.90 = 368,493.66 : x
  2. Step 2: Convert to fraction form
    654,979.74/903,798.90 = 368,493.66/x
  3. Step 3: Cross multiply
    654,979.74x = 903,798.90 × 368,493.66
  4. Step 4: Simplify right side
    654,979.74x = 333,044,164,564.97
  5. Step 5: Solve for x
    x = 333,044,164,564.97/654,979.74
  6. Step 6: Final answer
    x = 508,480.10

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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.