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Finding the Fourth Proportional to 482,784.55, 666,088.56 and 278,808.54

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Solution

The fourth proportional to 482,784.55, 666,088.56 and 278,808.54 is: 384,666.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,784.55 : 666,088.56 = 278,808.54 : x
  2. Step 2: Convert to fraction form
    482,784.55/666,088.56 = 278,808.54/x
  3. Step 3: Cross multiply
    482,784.55x = 666,088.56 × 278,808.54
  4. Step 4: Simplify right side
    482,784.55x = 185,711,178,924.30
  5. Step 5: Solve for x
    x = 185,711,178,924.30/482,784.55
  6. Step 6: Final answer
    x = 384,666.78

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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.