Finding the Fourth Proportional to 914,402,496.21, 1,261,910,132.44 and 512,523,672.75
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Solution
The fourth proportional to 914,402,496.21, 1,261,910,132.44 and 512,523,672.75 is: 707,302,110.88
Step by Step Solution
- Step 1: Write the proportion equation
914,402,496.21 : 1,261,910,132.44 = 512,523,672.75 : x - Step 2: Convert to fraction form
914,402,496.21/1,261,910,132.44 = 512,523,672.75/x - Step 3: Cross multiply
914,402,496.21x = 1,261,910,132.44 × 512,523,672.75 - Step 4: Simplify right side
914,402,496.21x = 646,758,815,757,306,368 - Step 5: Solve for x
x = 646,758,815,757,306,368/914,402,496.21 - Step 6: Final answer
x = 707,302,110.88
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Double scale
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1.5x scale
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.