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Finding the Fourth Proportional to 608,851.01, 840,383.28 and 354,251.40

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Solution

The fourth proportional to 608,851.01, 840,383.28 and 354,251.40 is: 488,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,851.01 : 840,383.28 = 354,251.40 : x
  2. Step 2: Convert to fraction form
    608,851.01/840,383.28 = 354,251.40/x
  3. Step 3: Cross multiply
    608,851.01x = 840,383.28 × 354,251.40
  4. Step 4: Simplify right side
    608,851.01x = 297,706,953,476.59
  5. Step 5: Solve for x
    x = 297,706,953,476.59/608,851.01
  6. Step 6: Final answer
    x = 488,965.20

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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.