Finding the Fourth Proportional to 1,428,585.84, 1,971,318.09 and 847,708.72
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Solution
The fourth proportional to 1,428,585.84, 1,971,318.09 and 847,708.72 is: 1,169,760.67
Step by Step Solution
- Step 1: Write the proportion equation
1,428,585.84 : 1,971,318.09 = 847,708.72 : x - Step 2: Convert to fraction form
1,428,585.84/1,971,318.09 = 847,708.72/x - Step 3: Cross multiply
1,428,585.84x = 1,971,318.09 × 847,708.72 - Step 4: Simplify right side
1,428,585.84x = 1,671,103,534,786.75 - Step 5: Solve for x
x = 1,671,103,534,786.75/1,428,585.84 - Step 6: Final answer
x = 1,169,760.67
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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.