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Finding the Fourth Proportional to 654,992.40, 903,880.25 and 368,511.80

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Solution

The fourth proportional to 654,992.40, 903,880.25 and 368,511.80 is: 508,541.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,992.40 : 903,880.25 = 368,511.80 : x
  2. Step 2: Convert to fraction form
    654,992.40/903,880.25 = 368,511.80/x
  3. Step 3: Cross multiply
    654,992.40x = 903,880.25 × 368,511.80
  4. Step 4: Simplify right side
    654,992.40x = 333,090,541,092.93
  5. Step 5: Solve for x
    x = 333,090,541,092.93/654,992.40
  6. Step 6: Final answer
    x = 508,541.08

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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.