Finding the Fourth Proportional to 1,247,513,928.96, 1,721,589,522.12 and 682,989,282.48
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Solution
The fourth proportional to 1,247,513,928.96, 1,721,589,522.12 and 682,989,282.48 is: 942,536,323.76
Step by Step Solution
- Step 1: Write the proportion equation
1,247,513,928.96 : 1,721,589,522.12 = 682,989,282.48 : x - Step 2: Convert to fraction form
1,247,513,928.96/1,721,589,522.12 = 682,989,282.48/x - Step 3: Cross multiply
1,247,513,928.96x = 1,721,589,522.12 × 682,989,282.48 - Step 4: Simplify right side
1,247,513,928.96x = 1,175,827,192,437,824,768 - Step 5: Solve for x
x = 1,175,827,192,437,824,768/1,247,513,928.96 - Step 6: Final answer
x = 942,536,323.76
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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.