Finding the Fourth Proportional to 905,392,897.95, 1,356,703,201.89 and 609,190,890.75
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Solution
The fourth proportional to 905,392,897.95, 1,356,703,201.89 and 609,190,890.75 is: 912,853,672.60
Step by Step Solution
- Step 1: Write the proportion equation
905,392,897.95 : 1,356,703,201.89 = 609,190,890.75 : x - Step 2: Convert to fraction form
905,392,897.95/1,356,703,201.89 = 609,190,890.75/x - Step 3: Cross multiply
905,392,897.95x = 1,356,703,201.89 × 609,190,890.75 - Step 4: Simplify right side
905,392,897.95x = 826,491,232,042,746,240 - Step 5: Solve for x
x = 826,491,232,042,746,240/905,392,897.95 - Step 6: Final answer
x = 912,853,672.60
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Double scale
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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.