Finding the Fourth Proportional to 1,688,670,686.05, 2,533,324,232.70 and 639,723,069.07
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Solution
The fourth proportional to 1,688,670,686.05, 2,533,324,232.70 and 639,723,069.07 is: 959,705,149.43
Step by Step Solution
- Step 1: Write the proportion equation
1,688,670,686.05 : 2,533,324,232.70 = 639,723,069.07 : x - Step 2: Convert to fraction form
1,688,670,686.05/2,533,324,232.70 = 639,723,069.07/x - Step 3: Cross multiply
1,688,670,686.05x = 2,533,324,232.70 × 639,723,069.07 - Step 4: Simplify right side
1,688,670,686.05x = 1,620,625,953,092,246,784 - Step 5: Solve for x
x = 1,620,625,953,092,246,784/1,688,670,686.05 - Step 6: Final answer
x = 959,705,149.43
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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.