Finding the Fourth Proportional to 7,129,355.92, 9,838,513.40 and 3,866,169.68
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Solution
The fourth proportional to 7,129,355.92, 9,838,513.40 and 3,866,169.68 is: 5,335,315.37
Step by Step Solution
- Step 1: Write the proportion equation
7,129,355.92 : 9,838,513.40 = 3,866,169.68 : x - Step 2: Convert to fraction form
7,129,355.92/9,838,513.40 = 3,866,169.68/x - Step 3: Cross multiply
7,129,355.92x = 9,838,513.40 × 3,866,169.68 - Step 4: Simplify right side
7,129,355.92x = 38,037,362,203,353.72 - Step 5: Solve for x
x = 38,037,362,203,353.72/7,129,355.92 - Step 6: Final answer
x = 5,335,315.37
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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.