Finding the Fourth Proportional to 19,790,438.40, 29,681,510.40 and 9,700,300.80
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Solution
The fourth proportional to 19,790,438.40, 29,681,510.40 and 9,700,300.80 is: 14,548,418.45
Step by Step Solution
- Step 1: Write the proportion equation
19,790,438.40 : 29,681,510.40 = 9,700,300.80 : x - Step 2: Convert to fraction form
19,790,438.40/29,681,510.40 = 9,700,300.80/x - Step 3: Cross multiply
19,790,438.40x = 29,681,510.40 × 9,700,300.80 - Step 4: Simplify right side
19,790,438.40x = 287,919,579,078,328.31 - Step 5: Solve for x
x = 287,919,579,078,328.31/19,790,438.40 - Step 6: Final answer
x = 14,548,418.45
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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.