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Finding the Fourth Proportional to 482,783.75, 666,087.44 and 278,807.72

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Solution

The fourth proportional to 482,783.75, 666,087.44 and 278,807.72 is: 384,665.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,783.75 : 666,087.44 = 278,807.72 : x
  2. Step 2: Convert to fraction form
    482,783.75/666,087.44 = 278,807.72/x
  3. Step 3: Cross multiply
    482,783.75x = 666,087.44 × 278,807.72
  4. Step 4: Simplify right side
    482,783.75x = 185,710,322,829.28
  5. Step 5: Solve for x
    x = 185,710,322,829.28/482,783.75
  6. Step 6: Final answer
    x = 384,665.65

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1.5x scale

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.