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Finding the Fourth Proportional to 668,459.04, 922,591.42 and 396,676.80

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Solution

The fourth proportional to 668,459.04, 922,591.42 and 396,676.80 is: 547,483.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,459.04 : 922,591.42 = 396,676.80 : x
  2. Step 2: Convert to fraction form
    668,459.04/922,591.42 = 396,676.80/x
  3. Step 3: Cross multiply
    668,459.04x = 922,591.42 × 396,676.80
  4. Step 4: Simplify right side
    668,459.04x = 365,970,612,193.06
  5. Step 5: Solve for x
    x = 365,970,612,193.06/668,459.04
  6. Step 6: Final answer
    x = 547,483.97

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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.