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Finding the Fourth Proportional to 615,421.63, 848,612.33 and 400,162.51

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Solution

The fourth proportional to 615,421.63, 848,612.33 and 400,162.51 is: 551,788.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,421.63 : 848,612.33 = 400,162.51 : x
  2. Step 2: Convert to fraction form
    615,421.63/848,612.33 = 400,162.51/x
  3. Step 3: Cross multiply
    615,421.63x = 848,612.33 × 400,162.51
  4. Step 4: Simplify right side
    615,421.63x = 339,582,839,989.75
  5. Step 5: Solve for x
    x = 339,582,839,989.75/615,421.63
  6. Step 6: Final answer
    x = 551,788.93

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.