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Finding the Fourth Proportional to 611,843.40, 916,728.30 and 295,619.40

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Solution

The fourth proportional to 611,843.40, 916,728.30 and 295,619.40 is: 442,928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,843.40 : 916,728.30 = 295,619.40 : x
  2. Step 2: Convert to fraction form
    611,843.40/916,728.30 = 295,619.40/x
  3. Step 3: Cross multiply
    611,843.40x = 916,728.30 × 295,619.40
  4. Step 4: Simplify right side
    611,843.40x = 271,002,670,009.02
  5. Step 5: Solve for x
    x = 271,002,670,009.02/611,843.40
  6. Step 6: Final answer
    x = 442,928.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.