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Finding the Fourth Proportional to 882,760, 1,218,208.80 and 480,354.88

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Solution

The fourth proportional to 882,760, 1,218,208.80 and 480,354.88 is: 662,889.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,760 : 1,218,208.80 = 480,354.88 : x
  2. Step 2: Convert to fraction form
    882,760/1,218,208.80 = 480,354.88/x
  3. Step 3: Cross multiply
    882,760x = 1,218,208.80 × 480,354.88
  4. Step 4: Simplify right side
    882,760x = 585,172,541,938.94
  5. Step 5: Solve for x
    x = 585,172,541,938.94/882,760
  6. Step 6: Final answer
    x = 662,889.73

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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.