Finding the Fourth Proportional to 1,121,126.88, 1,547,189.28 and 637,762.08
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Solution
The fourth proportional to 1,121,126.88, 1,547,189.28 and 637,762.08 is: 880,131.12
Step by Step Solution
- Step 1: Write the proportion equation
1,121,126.88 : 1,547,189.28 = 637,762.08 : x - Step 2: Convert to fraction form
1,121,126.88/1,547,189.28 = 637,762.08/x - Step 3: Cross multiply
1,121,126.88x = 1,547,189.28 × 637,762.08 - Step 4: Simplify right side
1,121,126.88x = 986,738,653,366.50 - Step 5: Solve for x
x = 986,738,653,366.50/1,121,126.88 - Step 6: Final answer
x = 880,131.12
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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.