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Finding the Fourth Proportional to 654,840.90, 903,732.93 and 368,343.90

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Solution

The fourth proportional to 654,840.90, 903,732.93 and 368,343.90 is: 508,344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,840.90 : 903,732.93 = 368,343.90 : x
  2. Step 2: Convert to fraction form
    654,840.90/903,732.93 = 368,343.90/x
  3. Step 3: Cross multiply
    654,840.90x = 903,732.93 × 368,343.90
  4. Step 4: Simplify right side
    654,840.90x = 332,884,511,994.63
  5. Step 5: Solve for x
    x = 332,884,511,994.63/654,840.90
  6. Step 6: Final answer
    x = 508,344.11

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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.