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Finding the Fourth Proportional to 491,304.03, 678,030.45 and 297,728.68

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Solution

The fourth proportional to 491,304.03, 678,030.45 and 297,728.68 is: 410,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,304.03 : 678,030.45 = 297,728.68 : x
  2. Step 2: Convert to fraction form
    491,304.03/678,030.45 = 297,728.68/x
  3. Step 3: Cross multiply
    491,304.03x = 678,030.45 × 297,728.68
  4. Step 4: Simplify right side
    491,304.03x = 201,869,110,878.31
  5. Step 5: Solve for x
    x = 201,869,110,878.31/491,304.03
  6. Step 6: Final answer
    x = 410,884.30

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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.