Finding the Fourth Proportional to 1,400,641.12, 1,930,560.78 and 992,219.68
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Solution
The fourth proportional to 1,400,641.12, 1,930,560.78 and 992,219.68 is: 1,367,616.85
Step by Step Solution
- Step 1: Write the proportion equation
1,400,641.12 : 1,930,560.78 = 992,219.68 : x - Step 2: Convert to fraction form
1,400,641.12/1,930,560.78 = 992,219.68/x - Step 3: Cross multiply
1,400,641.12x = 1,930,560.78 × 992,219.68 - Step 4: Simplify right side
1,400,641.12x = 1,915,540,399,352.15 - Step 5: Solve for x
x = 1,915,540,399,352.15/1,400,641.12 - Step 6: Final answer
x = 1,367,616.85
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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.