Finding the Fourth Proportional to 1,261,684,903.10, 1,741,224,418.65 and 718,548,812.84
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Solution
The fourth proportional to 1,261,684,903.10, 1,741,224,418.65 and 718,548,812.84 is: 991,653,887.46
Step by Step Solution
- Step 1: Write the proportion equation
1,261,684,903.10 : 1,741,224,418.65 = 718,548,812.84 : x - Step 2: Convert to fraction form
1,261,684,903.10/1,741,224,418.65 = 718,548,812.84/x - Step 3: Cross multiply
1,261,684,903.10x = 1,741,224,418.65 × 718,548,812.84 - Step 4: Simplify right side
1,261,684,903.10x = 1,251,154,738,908,976,896 - Step 5: Solve for x
x = 1,251,154,738,908,976,896/1,261,684,903.10 - Step 6: Final answer
x = 991,653,887.46
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1.5x scale
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.