Finding the Fourth Proportional to 1,290,713.40, 1,935,859.68 and 379,682.81
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Solution
The fourth proportional to 1,290,713.40, 1,935,859.68 and 379,682.81 is: 569,462.32
Step by Step Solution
- Step 1: Write the proportion equation
1,290,713.40 : 1,935,859.68 = 379,682.81 : x - Step 2: Convert to fraction form
1,290,713.40/1,935,859.68 = 379,682.81/x - Step 3: Cross multiply
1,290,713.40x = 1,935,859.68 × 379,682.81 - Step 4: Simplify right side
1,290,713.40x = 735,012,643,068.10 - Step 5: Solve for x
x = 735,012,643,068.10/1,290,713.40 - Step 6: Final answer
x = 569,462.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.