Finding the Fourth Proportional to 1,272,719,037.36, 1,756,149,906.56 and 715,694,511.36
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Solution
The fourth proportional to 1,272,719,037.36, 1,756,149,906.56 and 715,694,511.36 is: 987,544,628.75
Step by Step Solution
- Step 1: Write the proportion equation
1,272,719,037.36 : 1,756,149,906.56 = 715,694,511.36 : x - Step 2: Convert to fraction form
1,272,719,037.36/1,756,149,906.56 = 715,694,511.36/x - Step 3: Cross multiply
1,272,719,037.36x = 1,756,149,906.56 × 715,694,511.36 - Step 4: Simplify right side
1,272,719,037.36x = 1,256,866,849,250,368,768 - Step 5: Solve for x
x = 1,256,866,849,250,368,768/1,272,719,037.36 - Step 6: Final answer
x = 987,544,628.75
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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.