Finding the Fourth Proportional to 19,988,385,954.84, 29,803,877,479.35 and 19,439,217,413.64
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Solution
The fourth proportional to 19,988,385,954.84, 29,803,877,479.35 and 19,439,217,413.64 is: 28,985,034,379.44
Step by Step Solution
- Step 1: Write the proportion equation
19,988,385,954.84 : 29,803,877,479.35 = 19,439,217,413.64 : x - Step 2: Convert to fraction form
19,988,385,954.84/29,803,877,479.35 = 19,439,217,413.64/x - Step 3: Cross multiply
19,988,385,954.84x = 29,803,877,479.35 × 19,439,217,413.64 - Step 4: Simplify right side
19,988,385,954.84x = 579,364,054,090,573,479,936 - Step 5: Solve for x
x = 579,364,054,090,573,479,936/19,988,385,954.84 - Step 6: Final answer
x = 28,985,034,379.44
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.