Finding the Fourth Proportional to 1,178,671.12, 1,626,139.48 and 771,005.68
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Solution
The fourth proportional to 1,178,671.12, 1,626,139.48 and 771,005.68 is: 1,063,708.74
Step by Step Solution
- Step 1: Write the proportion equation
1,178,671.12 : 1,626,139.48 = 771,005.68 : x - Step 2: Convert to fraction form
1,178,671.12/1,626,139.48 = 771,005.68/x - Step 3: Cross multiply
1,178,671.12x = 1,626,139.48 × 771,005.68 - Step 4: Simplify right side
1,178,671.12x = 1,253,762,775,552.25 - Step 5: Solve for x
x = 1,253,762,775,552.25/1,178,671.12 - Step 6: Final answer
x = 1,063,708.74
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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.