Finding the Fourth Proportional to 2,585,386,366.98, 3,878,624,277.99 and 838,452,887.70
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Solution
The fourth proportional to 2,585,386,366.98, 3,878,624,277.99 and 838,452,887.70 is: 1,257,855,989.23
Step by Step Solution
- Step 1: Write the proportion equation
2,585,386,366.98 : 3,878,624,277.99 = 838,452,887.70 : x - Step 2: Convert to fraction form
2,585,386,366.98/3,878,624,277.99 = 838,452,887.70/x - Step 3: Cross multiply
2,585,386,366.98x = 3,878,624,277.99 × 838,452,887.70 - Step 4: Simplify right side
2,585,386,366.98x = 3,252,043,726,184,043,008 - Step 5: Solve for x
x = 3,252,043,726,184,043,008/2,585,386,366.98 - Step 6: Final answer
x = 1,257,855,989.23
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.