Finding the Fourth Proportional to 668,221,657.70, 1,002,332,486.55 and 622,872,025.70
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Solution
The fourth proportional to 668,221,657.70, 1,002,332,486.55 and 622,872,025.70 is: 934,308,038.55
Step by Step Solution
- Step 1: Write the proportion equation
668,221,657.70 : 1,002,332,486.55 = 622,872,025.70 : x - Step 2: Convert to fraction form
668,221,657.70/1,002,332,486.55 = 622,872,025.70/x - Step 3: Cross multiply
668,221,657.70x = 1,002,332,486.55 × 622,872,025.70 - Step 4: Simplify right side
668,221,657.70x = 624,324,866,322,316,544 - Step 5: Solve for x
x = 624,324,866,322,316,544/668,221,657.70 - Step 6: Final answer
x = 934,308,038.55
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Double scale
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Similar ratio
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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.