Home / 821,347,131-1,133,459,040.78-491,336,179.32

Finding the Fourth Proportional to 821,347,131, 1,133,459,040.78 and 491,336,179.32

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Solution

The fourth proportional to 821,347,131, 1,133,459,040.78 and 491,336,179.32 is: 678,043,927.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,347,131 : 1,133,459,040.78 = 491,336,179.32 : x
  2. Step 2: Convert to fraction form
    821,347,131/1,133,459,040.78 = 491,336,179.32/x
  3. Step 3: Cross multiply
    821,347,131x = 1,133,459,040.78 × 491,336,179.32
  4. Step 4: Simplify right side
    821,347,131x = 556,909,434,512,557,248
  5. Step 5: Solve for x
    x = 556,909,434,512,557,248/821,347,131
  6. Step 6: Final answer
    x = 678,043,927.46

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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.