Finding the Fourth Proportional to 1,225,286.12, 1,690,972.26 and 688,776.68
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Solution
The fourth proportional to 1,225,286.12, 1,690,972.26 and 688,776.68 is: 950,555.34
Step by Step Solution
- Step 1: Write the proportion equation
1,225,286.12 : 1,690,972.26 = 688,776.68 : x - Step 2: Convert to fraction form
1,225,286.12/1,690,972.26 = 688,776.68/x - Step 3: Cross multiply
1,225,286.12x = 1,690,972.26 × 688,776.68 - Step 4: Simplify right side
1,225,286.12x = 1,164,702,259,214.90 - Step 5: Solve for x
x = 1,164,702,259,214.90/1,225,286.12 - Step 6: Final answer
x = 950,555.34
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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.