Finding the Fourth Proportional to 1,979,509,985.17, 2,731,725,569.94 and 1,087,494,496.62
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Solution
The fourth proportional to 1,979,509,985.17, 2,731,725,569.94 and 1,087,494,496.62 is: 1,500,743,388.94
Step by Step Solution
- Step 1: Write the proportion equation
1,979,509,985.17 : 2,731,725,569.94 = 1,087,494,496.62 : x - Step 2: Convert to fraction form
1,979,509,985.17/2,731,725,569.94 = 1,087,494,496.62/x - Step 3: Cross multiply
1,979,509,985.17x = 2,731,725,569.94 × 1,087,494,496.62 - Step 4: Simplify right side
1,979,509,985.17x = 2,970,736,523,585,882,624 - Step 5: Solve for x
x = 2,970,736,523,585,882,624/1,979,509,985.17 - Step 6: Final answer
x = 1,500,743,388.94
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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.