Finding the Fourth Proportional to 1,248,959,496.68, 1,723,566,128.21 and 684,354,668.41
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Solution
The fourth proportional to 1,248,959,496.68, 1,723,566,128.21 and 684,354,668.41 is: 944,410,550.77
Step by Step Solution
- Step 1: Write the proportion equation
1,248,959,496.68 : 1,723,566,128.21 = 684,354,668.41 : x - Step 2: Convert to fraction form
1,248,959,496.68/1,723,566,128.21 = 684,354,668.41/x - Step 3: Cross multiply
1,248,959,496.68x = 1,723,566,128.21 × 684,354,668.41 - Step 4: Simplify right side
1,248,959,496.68x = 1,179,530,526,153,862,144 - Step 5: Solve for x
x = 1,179,530,526,153,862,144/1,248,959,496.68 - Step 6: Final answer
x = 944,410,550.77
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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.