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Finding the Fourth Proportional to 482,783.55, 666,087.18 and 278,807.54

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Solution

The fourth proportional to 482,783.55, 666,087.18 and 278,807.54 is: 384,665.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,783.55 : 666,087.18 = 278,807.54 : x
  2. Step 2: Convert to fraction form
    482,783.55/666,087.18 = 278,807.54/x
  3. Step 3: Cross multiply
    482,783.55x = 666,087.18 × 278,807.54
  4. Step 4: Simplify right side
    482,783.55x = 185,710,124,750.90
  5. Step 5: Solve for x
    x = 185,710,124,750.90/482,783.55
  6. Step 6: Final answer
    x = 384,665.39

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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.