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Finding the Fourth Proportional to 654,661.47, 903,424.13 and 368,181.55

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Solution

The fourth proportional to 654,661.47, 903,424.13 and 368,181.55 is: 508,085.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,661.47 : 903,424.13 = 368,181.55 : x
  2. Step 2: Convert to fraction form
    654,661.47/903,424.13 = 368,181.55/x
  3. Step 3: Cross multiply
    654,661.47x = 903,424.13 × 368,181.55
  4. Step 4: Simplify right side
    654,661.47x = 332,624,099,230.88
  5. Step 5: Solve for x
    x = 332,624,099,230.88/654,661.47
  6. Step 6: Final answer
    x = 508,085.65

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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.