Finding the Fourth Proportional to 840,522,821.20, 1,260,784,231.80 and 295,264,355.20
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Solution
The fourth proportional to 840,522,821.20, 1,260,784,231.80 and 295,264,355.20 is: 442,896,532.80
Step by Step Solution
- Step 1: Write the proportion equation
840,522,821.20 : 1,260,784,231.80 = 295,264,355.20 : x - Step 2: Convert to fraction form
840,522,821.20/1,260,784,231.80 = 295,264,355.20/x - Step 3: Cross multiply
840,522,821.20x = 1,260,784,231.80 × 295,264,355.20 - Step 4: Simplify right side
840,522,821.20x = 372,264,643,248,754,304 - Step 5: Solve for x
x = 372,264,643,248,754,304/840,522,821.20 - Step 6: Final answer
x = 442,896,532.80
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Double scale
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1.5x scale
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.