Finding the Fourth Proportional to 1,992,877,416.30, 2,989,316,124.45 and 957,488,630.70
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Solution
The fourth proportional to 1,992,877,416.30, 2,989,316,124.45 and 957,488,630.70 is: 1,436,232,946.05
Step by Step Solution
- Step 1: Write the proportion equation
1,992,877,416.30 : 2,989,316,124.45 = 957,488,630.70 : x - Step 2: Convert to fraction form
1,992,877,416.30/2,989,316,124.45 = 957,488,630.70/x - Step 3: Cross multiply
1,992,877,416.30x = 2,989,316,124.45 × 957,488,630.70 - Step 4: Simplify right side
1,992,877,416.30x = 2,862,236,202,729,061,376 - Step 5: Solve for x
x = 2,862,236,202,729,061,376/1,992,877,416.30 - Step 6: Final answer
x = 1,436,232,946.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.