Finding the Fourth Proportional to 779,364,997.20, 1,075,515,127.92 and 422,123,886.99
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Solution
The fourth proportional to 779,364,997.20, 1,075,515,127.92 and 422,123,886.99 is: 582,526,323.28
Step by Step Solution
- Step 1: Write the proportion equation
779,364,997.20 : 1,075,515,127.92 = 422,123,886.99 : x - Step 2: Convert to fraction form
779,364,997.20/1,075,515,127.92 = 422,123,886.99/x - Step 3: Cross multiply
779,364,997.20x = 1,075,515,127.92 × 422,123,886.99 - Step 4: Simplify right side
779,364,997.20x = 454,000,626,314,137,536 - Step 5: Solve for x
x = 454,000,626,314,137,536/779,364,997.20 - Step 6: Final answer
x = 582,526,323.28
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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.