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Finding the Fourth Proportional to 615,421.56, 848,612.24 and 400,162.44

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Solution

The fourth proportional to 615,421.56, 848,612.24 and 400,162.44 is: 551,788.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,421.56 : 848,612.24 = 400,162.44 : x
  2. Step 2: Convert to fraction form
    615,421.56/848,612.24 = 400,162.44/x
  3. Step 3: Cross multiply
    615,421.56x = 848,612.24 × 400,162.44
  4. Step 4: Simplify right side
    615,421.56x = 339,582,749,505.27
  5. Step 5: Solve for x
    x = 339,582,749,505.27/615,421.56
  6. Step 6: Final answer
    x = 551,788.84

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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.