Finding the Fourth Proportional to 1,216,084,187,639.70, 1,678,085,255,983 and 721,603,526,115.03
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Solution
The fourth proportional to 1,216,084,187,639.70, 1,678,085,255,983 and 721,603,526,115.03 is: 995,747,046,254.45
Step by Step Solution
- Step 1: Write the proportion equation
1,216,084,187,639.70 : 1,678,085,255,983 = 721,603,526,115.03 : x - Step 2: Convert to fraction form
1,216,084,187,639.70/1,678,085,255,983 = 721,603,526,115.03/x - Step 3: Cross multiply
1,216,084,187,639.70x = 1,678,085,255,983 × 721,603,526,115.03 - Step 4: Simplify right side
1,216,084,187,639.70x = 1,210,912,237,838,975,685,885,952 - Step 5: Solve for x
x = 1,210,912,237,838,975,685,885,952/1,216,084,187,639.70 - Step 6: Final answer
x = 995,747,046,254.45
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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.