Finding the Fourth Proportional to 612,811,961.31, 845,941,448.96 and 411,985,307.79
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Solution
The fourth proportional to 612,811,961.31, 845,941,448.96 and 411,985,307.79 is: 568,715,152.81
Step by Step Solution
- Step 1: Write the proportion equation
612,811,961.31 : 845,941,448.96 = 411,985,307.79 : x - Step 2: Convert to fraction form
612,811,961.31/845,941,448.96 = 411,985,307.79/x - Step 3: Cross multiply
612,811,961.31x = 845,941,448.96 × 411,985,307.79 - Step 4: Simplify right side
612,811,961.31x = 348,515,448,220,044,288 - Step 5: Solve for x
x = 348,515,448,220,044,288/612,811,961.31 - Step 6: Final answer
x = 568,715,152.81
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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.