Finding the Fourth Proportional to 1,306,988,831.19, 1,803,591,967.08 and 712,260,546.12
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Solution
The fourth proportional to 1,306,988,831.19, 1,803,591,967.08 and 712,260,546.12 is: 982,890,877.71
Step by Step Solution
- Step 1: Write the proportion equation
1,306,988,831.19 : 1,803,591,967.08 = 712,260,546.12 : x - Step 2: Convert to fraction form
1,306,988,831.19/1,803,591,967.08 = 712,260,546.12/x - Step 3: Cross multiply
1,306,988,831.19x = 1,803,591,967.08 × 712,260,546.12 - Step 4: Simplify right side
1,306,988,831.19x = 1,284,627,399,450,045,696 - Step 5: Solve for x
x = 1,284,627,399,450,045,696/1,306,988,831.19 - Step 6: Final answer
x = 982,890,877.71
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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.