Finding the Fourth Proportional to 7,129,353.92, 9,838,510.64 and 3,866,167.68
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Solution
The fourth proportional to 7,129,353.92, 9,838,510.64 and 3,866,167.68 is: 5,335,312.61
Step by Step Solution
- Step 1: Write the proportion equation
7,129,353.92 : 9,838,510.64 = 3,866,167.68 : x - Step 2: Convert to fraction form
7,129,353.92/9,838,510.64 = 3,866,167.68/x - Step 3: Cross multiply
7,129,353.92x = 9,838,510.64 × 3,866,167.68 - Step 4: Simplify right side
7,129,353.92x = 38,037,331,855,704.12 - Step 5: Solve for x
x = 38,037,331,855,704.12/7,129,353.92 - Step 6: Final answer
x = 5,335,312.61
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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.