Finding the Fourth Proportional to 1,644,454,312.40, 2,466,681,468.60 and 815,087,487.80
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Solution
The fourth proportional to 1,644,454,312.40, 2,466,681,468.60 and 815,087,487.80 is: 1,222,631,231.70
Step by Step Solution
- Step 1: Write the proportion equation
1,644,454,312.40 : 2,466,681,468.60 = 815,087,487.80 : x - Step 2: Convert to fraction form
1,644,454,312.40/2,466,681,468.60 = 815,087,487.80/x - Step 3: Cross multiply
1,644,454,312.40x = 2,466,681,468.60 × 815,087,487.80 - Step 4: Simplify right side
1,644,454,312.40x = 2,010,561,201,443,988,480 - Step 5: Solve for x
x = 2,010,561,201,443,988,480/1,644,454,312.40 - Step 6: Final answer
x = 1,222,631,231.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.