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Finding the Fourth Proportional to 887,990,323.68, 1,225,400,043.60 and 491,529,564

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Solution

The fourth proportional to 887,990,323.68, 1,225,400,043.60 and 491,529,564 is: 678,296,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,990,323.68 : 1,225,400,043.60 = 491,529,564 : x
  2. Step 2: Convert to fraction form
    887,990,323.68/1,225,400,043.60 = 491,529,564/x
  3. Step 3: Cross multiply
    887,990,323.68x = 1,225,400,043.60 × 491,529,564
  4. Step 4: Simplify right side
    887,990,323.68x = 602,320,349,156,288,896
  5. Step 5: Solve for x
    x = 602,320,349,156,288,896/887,990,323.68
  6. Step 6: Final answer
    x = 678,296,072.71

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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.