Finding the Fourth Proportional to 1,688,364.38, 2,329,940.35 and 913,991.42
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Solution
The fourth proportional to 1,688,364.38, 2,329,940.35 and 913,991.42 is: 1,261,306.81
Step by Step Solution
- Step 1: Write the proportion equation
1,688,364.38 : 2,329,940.35 = 913,991.42 : x - Step 2: Convert to fraction form
1,688,364.38/2,329,940.35 = 913,991.42/x - Step 3: Cross multiply
1,688,364.38x = 2,329,940.35 × 913,991.42 - Step 4: Simplify right side
1,688,364.38x = 2,129,545,484,284.98 - Step 5: Solve for x
x = 2,129,545,484,284.98/1,688,364.38 - Step 6: Final answer
x = 1,261,306.81
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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.