Finding the Fourth Proportional to 886,257,362.28, 1,328,197,649.22 and 689,758,036.68
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Solution
The fourth proportional to 886,257,362.28, 1,328,197,649.22 and 689,758,036.68 is: 1,033,712,149.36
Step by Step Solution
- Step 1: Write the proportion equation
886,257,362.28 : 1,328,197,649.22 = 689,758,036.68 : x - Step 2: Convert to fraction form
886,257,362.28/1,328,197,649.22 = 689,758,036.68/x - Step 3: Cross multiply
886,257,362.28x = 1,328,197,649.22 × 689,758,036.68 - Step 4: Simplify right side
886,257,362.28x = 916,135,002,848,978,432 - Step 5: Solve for x
x = 916,135,002,848,978,432/886,257,362.28 - Step 6: Final answer
x = 1,033,712,149.36
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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.