Finding the Fourth Proportional to 7,891,183,432.80, 10,887,270,868.80 and 5,380,698,657.60
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Solution
The fourth proportional to 7,891,183,432.80, 10,887,270,868.80 and 5,380,698,657.60 is: 7,423,617,033.81
Step by Step Solution
- Step 1: Write the proportion equation
7,891,183,432.80 : 10,887,270,868.80 = 5,380,698,657.60 : x - Step 2: Convert to fraction form
7,891,183,432.80/10,887,270,868.80 = 5,380,698,657.60/x - Step 3: Cross multiply
7,891,183,432.80x = 10,887,270,868.80 × 5,380,698,657.60 - Step 4: Simplify right side
7,891,183,432.80x = 58,581,123,748,679,745,536 - Step 5: Solve for x
x = 58,581,123,748,679,745,536/7,891,183,432.80 - Step 6: Final answer
x = 7,423,617,033.81
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1.5x scale
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.