Finding the Fourth Proportional to 779,365,000.20, 1,075,515,132.06 and 422,123,889.99
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Solution
The fourth proportional to 779,365,000.20, 1,075,515,132.06 and 422,123,889.99 is: 582,526,327.42
Step by Step Solution
- Step 1: Write the proportion equation
779,365,000.20 : 1,075,515,132.06 = 422,123,889.99 : x - Step 2: Convert to fraction form
779,365,000.20/1,075,515,132.06 = 422,123,889.99/x - Step 3: Cross multiply
779,365,000.20x = 1,075,515,132.06 × 422,123,889.99 - Step 4: Simplify right side
779,365,000.20x = 454,000,631,288,275,776 - Step 5: Solve for x
x = 454,000,631,288,275,776/779,365,000.20 - Step 6: Final answer
x = 582,526,327.42
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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.