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Finding the Fourth Proportional to 615,471.16, 848,680.50 and 400,212.04

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Solution

The fourth proportional to 615,471.16, 848,680.50 and 400,212.04 is: 551,857.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,471.16 : 848,680.50 = 400,212.04 : x
  2. Step 2: Convert to fraction form
    615,471.16/848,680.50 = 400,212.04/x
  3. Step 3: Cross multiply
    615,471.16x = 848,680.50 × 400,212.04
  4. Step 4: Simplify right side
    615,471.16x = 339,652,154,213.22
  5. Step 5: Solve for x
    x = 339,652,154,213.22/615,471.16
  6. Step 6: Final answer
    x = 551,857.14

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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.