Home / 721,352,817.52-995,382,906.78-403,830,450.50

Finding the Fourth Proportional to 721,352,817.52, 995,382,906.78 and 403,830,450.50

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Solution

The fourth proportional to 721,352,817.52, 995,382,906.78 and 403,830,450.50 is: 557,239,006.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,352,817.52 : 995,382,906.78 = 403,830,450.50 : x
  2. Step 2: Convert to fraction form
    721,352,817.52/995,382,906.78 = 403,830,450.50/x
  3. Step 3: Cross multiply
    721,352,817.52x = 995,382,906.78 × 403,830,450.50
  4. Step 4: Simplify right side
    721,352,817.52x = 401,965,927,664,966,912
  5. Step 5: Solve for x
    x = 401,965,927,664,966,912/721,352,817.52
  6. Step 6: Final answer
    x = 557,239,006.91

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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.