Finding the Fourth Proportional to 1,440,931,046.96, 1,988,486,544.84 and 780,881,324.96
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Solution
The fourth proportional to 1,440,931,046.96, 1,988,486,544.84 and 780,881,324.96 is: 1,077,617,149.74
Step by Step Solution
- Step 1: Write the proportion equation
1,440,931,046.96 : 1,988,486,544.84 = 780,881,324.96 : x - Step 2: Convert to fraction form
1,440,931,046.96/1,988,486,544.84 = 780,881,324.96/x - Step 3: Cross multiply
1,440,931,046.96x = 1,988,486,544.84 × 780,881,324.96 - Step 4: Simplify right side
1,440,931,046.96x = 1,552,772,007,799,791,616 - Step 5: Solve for x
x = 1,552,772,007,799,791,616/1,440,931,046.96 - Step 6: Final answer
x = 1,077,617,149.74
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1.5x scale
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.