Finding the Fourth Proportional to 1,201,863.12, 1,658,590.74 and 657,989.88
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Solution
The fourth proportional to 1,201,863.12, 1,658,590.74 and 657,989.88 is: 908,036.78
Step by Step Solution
- Step 1: Write the proportion equation
1,201,863.12 : 1,658,590.74 = 657,989.88 : x - Step 2: Convert to fraction form
1,201,863.12/1,658,590.74 = 657,989.88/x - Step 3: Cross multiply
1,201,863.12x = 1,658,590.74 × 657,989.88 - Step 4: Simplify right side
1,201,863.12x = 1,091,335,921,981.71 - Step 5: Solve for x
x = 1,091,335,921,981.71/1,201,863.12 - Step 6: Final answer
x = 908,036.78
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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.