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Finding the Fourth Proportional to 887,695.60, 1,330,887.30 and 488,786.80

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Solution

The fourth proportional to 887,695.60, 1,330,887.30 and 488,786.80 is: 732,818.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,695.60 : 1,330,887.30 = 488,786.80 : x
  2. Step 2: Convert to fraction form
    887,695.60/1,330,887.30 = 488,786.80/x
  3. Step 3: Cross multiply
    887,695.60x = 1,330,887.30 × 488,786.80
  4. Step 4: Simplify right side
    887,695.60x = 650,520,144,527.64
  5. Step 5: Solve for x
    x = 650,520,144,527.64/887,695.60
  6. Step 6: Final answer
    x = 732,818.94

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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.