Finding the Fourth Proportional to 977,948,805.62, 1,349,446,861.32 and 661,098,455.70
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Solution
The fourth proportional to 977,948,805.62, 1,349,446,861.32 and 661,098,455.70 is: 912,233,064.70
Step by Step Solution
- Step 1: Write the proportion equation
977,948,805.62 : 1,349,446,861.32 = 661,098,455.70 : x - Step 2: Convert to fraction form
977,948,805.62/1,349,446,861.32 = 661,098,455.70/x - Step 3: Cross multiply
977,948,805.62x = 1,349,446,861.32 × 661,098,455.70 - Step 4: Simplify right side
977,948,805.62x = 892,117,236,067,864,064 - Step 5: Solve for x
x = 892,117,236,067,864,064/977,948,805.62 - Step 6: Final answer
x = 912,233,064.70
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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.