Finding the Fourth Proportional to 603,640,963.70, 905,461,445.55 and 603,640,963.70
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Solution
The fourth proportional to 603,640,963.70, 905,461,445.55 and 603,640,963.70 is: 905,461,445.55
Step by Step Solution
- Step 1: Write the proportion equation
603,640,963.70 : 905,461,445.55 = 603,640,963.70 : x - Step 2: Convert to fraction form
603,640,963.70/905,461,445.55 = 603,640,963.70/x - Step 3: Cross multiply
603,640,963.70x = 905,461,445.55 × 603,640,963.70 - Step 4: Simplify right side
603,640,963.70x = 546,573,619,584,997,120 - Step 5: Solve for x
x = 546,573,619,584,997,120/603,640,963.70 - Step 6: Final answer
x = 905,461,445.55
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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.