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Finding the Fourth Proportional to 551,616.40, 828,202.20 and 341,664.40

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Solution

The fourth proportional to 551,616.40, 828,202.20 and 341,664.40 is: 512,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,616.40 : 828,202.20 = 341,664.40 : x
  2. Step 2: Convert to fraction form
    551,616.40/828,202.20 = 341,664.40/x
  3. Step 3: Cross multiply
    551,616.40x = 828,202.20 × 341,664.40
  4. Step 4: Simplify right side
    551,616.40x = 282,967,207,741.68
  5. Step 5: Solve for x
    x = 282,967,207,741.68/551,616.40
  6. Step 6: Final answer
    x = 512,978.24

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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.