Finding the Fourth Proportional to 1,223,538.01, 1,688,435.49 and 679,708.03
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Solution
The fourth proportional to 1,223,538.01, 1,688,435.49 and 679,708.03 is: 937,970.99
Step by Step Solution
- Step 1: Write the proportion equation
1,223,538.01 : 1,688,435.49 = 679,708.03 : x - Step 2: Convert to fraction form
1,223,538.01/1,688,435.49 = 679,708.03/x - Step 3: Cross multiply
1,223,538.01x = 1,688,435.49 × 679,708.03 - Step 4: Simplify right side
1,223,538.01x = 1,147,643,160,689.98 - Step 5: Solve for x
x = 1,147,643,160,689.98/1,223,538.01 - Step 6: Final answer
x = 937,970.99
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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.