Home / 678,804,628.40-1,017,790,237.56-263,796,878.72

Finding the Fourth Proportional to 678,804,628.40, 1,017,790,237.56 and 263,796,878.72

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Solution

The fourth proportional to 678,804,628.40, 1,017,790,237.56 and 263,796,878.72 is: 395,533,378.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,804,628.40 : 1,017,790,237.56 = 263,796,878.72 : x
  2. Step 2: Convert to fraction form
    678,804,628.40/1,017,790,237.56 = 263,796,878.72/x
  3. Step 3: Cross multiply
    678,804,628.40x = 1,017,790,237.56 × 263,796,878.72
  4. Step 4: Simplify right side
    678,804,628.40x = 268,489,887,860,015,296
  5. Step 5: Solve for x
    x = 268,489,887,860,015,296/678,804,628.40
  6. Step 6: Final answer
    x = 395,533,378.28

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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.