Finding the Fourth Proportional to 668,776,566.42, 922,913,817.39 and 371,418,808.44
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Solution
The fourth proportional to 668,776,566.42, 922,913,817.39 and 371,418,808.44 is: 512,559,152.88
Step by Step Solution
- Step 1: Write the proportion equation
668,776,566.42 : 922,913,817.39 = 371,418,808.44 : x - Step 2: Convert to fraction form
668,776,566.42/922,913,817.39 = 371,418,808.44/x - Step 3: Cross multiply
668,776,566.42x = 922,913,817.39 × 371,418,808.44 - Step 4: Simplify right side
668,776,566.42x = 342,787,550,347,805,568 - Step 5: Solve for x
x = 342,787,550,347,805,568/668,776,566.42 - Step 6: Final answer
x = 512,559,152.88
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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.