Finding the Fourth Proportional to 709,425,136.02, 979,467,348.69 and 634,956,736.26
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Solution
The fourth proportional to 709,425,136.02, 979,467,348.69 and 634,956,736.26 is: 876,652,601.41
Step by Step Solution
- Step 1: Write the proportion equation
709,425,136.02 : 979,467,348.69 = 634,956,736.26 : x - Step 2: Convert to fraction form
709,425,136.02/979,467,348.69 = 634,956,736.26/x - Step 3: Cross multiply
709,425,136.02x = 979,467,348.69 × 634,956,736.26 - Step 4: Simplify right side
709,425,136.02x = 621,919,390,997,437,824 - Step 5: Solve for x
x = 621,919,390,997,437,824/709,425,136.02 - Step 6: Final answer
x = 876,652,601.41
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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.