Finding the Fourth Proportional to 1,443,213,302.87, 1,991,634,357.96 and 783,163,580.87
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Solution
The fourth proportional to 1,443,213,302.87, 1,991,634,357.96 and 783,163,580.87 is: 1,080,765,741.60
Step by Step Solution
- Step 1: Write the proportion equation
1,443,213,302.87 : 1,991,634,357.96 = 783,163,580.87 : x - Step 2: Convert to fraction form
1,443,213,302.87/1,991,634,357.96 = 783,163,580.87/x - Step 3: Cross multiply
1,443,213,302.87x = 1,991,634,357.96 × 783,163,580.87 - Step 4: Simplify right side
1,443,213,302.87x = 1,559,775,495,567,512,320 - Step 5: Solve for x
x = 1,559,775,495,567,512,320/1,443,213,302.87 - Step 6: Final answer
x = 1,080,765,741.60
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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.