Finding the Fourth Proportional to 19,653,121.20, 29,479,681.80 and 19,653,121.20
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Solution
The fourth proportional to 19,653,121.20, 29,479,681.80 and 19,653,121.20 is: 29,479,681.80
Step by Step Solution
- Step 1: Write the proportion equation
19,653,121.20 : 29,479,681.80 = 19,653,121.20 : x - Step 2: Convert to fraction form
19,653,121.20/29,479,681.80 = 19,653,121.20/x - Step 3: Cross multiply
19,653,121.20x = 29,479,681.80 × 19,653,121.20 - Step 4: Simplify right side
19,653,121.20x = 579,367,759,352,834.12 - Step 5: Solve for x
x = 579,367,759,352,834.12/19,653,121.20 - Step 6: Final answer
x = 29,479,681.80
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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.