Finding the Fourth Proportional to 19,418,079.88, 29,131,862.12 and 6,464,205.51
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Solution
The fourth proportional to 19,418,079.88, 29,131,862.12 and 6,464,205.51 is: 9,697,886.95
Step by Step Solution
- Step 1: Write the proportion equation
19,418,079.88 : 29,131,862.12 = 6,464,205.51 : x - Step 2: Convert to fraction form
19,418,079.88/29,131,862.12 = 6,464,205.51/x - Step 3: Cross multiply
19,418,079.88x = 29,131,862.12 × 6,464,205.51 - Step 4: Simplify right side
19,418,079.88x = 188,314,343,515,339.53 - Step 5: Solve for x
x = 188,314,343,515,339.53/19,418,079.88 - Step 6: Final answer
x = 9,697,886.95
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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.