Finding the Fourth Proportional to 747,680,912.80, 1,121,521,369.20 and 360,260,423.80
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Solution
The fourth proportional to 747,680,912.80, 1,121,521,369.20 and 360,260,423.80 is: 540,390,635.70
Step by Step Solution
- Step 1: Write the proportion equation
747,680,912.80 : 1,121,521,369.20 = 360,260,423.80 : x - Step 2: Convert to fraction form
747,680,912.80/1,121,521,369.20 = 360,260,423.80/x - Step 3: Cross multiply
747,680,912.80x = 1,121,521,369.20 × 360,260,423.80 - Step 4: Simplify right side
747,680,912.80x = 404,039,763,768,748,288 - Step 5: Solve for x
x = 404,039,763,768,748,288/747,680,912.80 - Step 6: Final answer
x = 540,390,635.70
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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.