Finding the Fourth Proportional to 1,010,394,020.90, 1,515,591,031.35 and 575,037,553.70
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Solution
The fourth proportional to 1,010,394,020.90, 1,515,591,031.35 and 575,037,553.70 is: 862,556,330.55
Step by Step Solution
- Step 1: Write the proportion equation
1,010,394,020.90 : 1,515,591,031.35 = 575,037,553.70 : x - Step 2: Convert to fraction form
1,010,394,020.90/1,515,591,031.35 = 575,037,553.70/x - Step 3: Cross multiply
1,010,394,020.90x = 1,515,591,031.35 × 575,037,553.70 - Step 4: Simplify right side
1,010,394,020.90x = 871,521,759,077,164,032 - Step 5: Solve for x
x = 871,521,759,077,164,032/1,010,394,020.90 - Step 6: Final answer
x = 862,556,330.55
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Double scale
Find fourth proportional to 1,010,394,021.90, 1,515,591,032.85 and 575,037,554.70
Similar ratio
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1.5x scale
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.