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Finding the Fourth Proportional to 553,015.50, 828,678.20 and 372,433.20

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Solution

The fourth proportional to 553,015.50, 828,678.20 and 372,433.20 is: 558,080.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,015.50 : 828,678.20 = 372,433.20 : x
  2. Step 2: Convert to fraction form
    553,015.50/828,678.20 = 372,433.20/x
  3. Step 3: Cross multiply
    553,015.50x = 828,678.20 × 372,433.20
  4. Step 4: Simplify right side
    553,015.50x = 308,627,273,796.24
  5. Step 5: Solve for x
    x = 308,627,273,796.24/553,015.50
  6. Step 6: Final answer
    x = 558,080.69

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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.