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Finding the Fourth Proportional to 407,730.40, 611,595.60 and 403,793.80

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Solution

The fourth proportional to 407,730.40, 611,595.60 and 403,793.80 is: 605,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,730.40 : 611,595.60 = 403,793.80 : x
  2. Step 2: Convert to fraction form
    407,730.40/611,595.60 = 403,793.80/x
  3. Step 3: Cross multiply
    407,730.40x = 611,595.60 × 403,793.80
  4. Step 4: Simplify right side
    407,730.40x = 246,958,511,387.28
  5. Step 5: Solve for x
    x = 246,958,511,387.28/407,730.40
  6. Step 6: Final answer
    x = 605,690.70

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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.