Finding the Fourth Proportional to 1,305,558,153.80, 1,801,714,470.56 and 710,865,702.08
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Solution
The fourth proportional to 1,305,558,153.80, 1,801,714,470.56 and 710,865,702.08 is: 981,018,745.38
Step by Step Solution
- Step 1: Write the proportion equation
1,305,558,153.80 : 1,801,714,470.56 = 710,865,702.08 : x - Step 2: Convert to fraction form
1,305,558,153.80/1,801,714,470.56 = 710,865,702.08/x - Step 3: Cross multiply
1,305,558,153.80x = 1,801,714,470.56 × 710,865,702.08 - Step 4: Simplify right side
1,305,558,153.80x = 1,280,777,022,062,329,856 - Step 5: Solve for x
x = 1,280,777,022,062,329,856/1,305,558,153.80 - Step 6: Final answer
x = 981,018,745.38
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Double scale
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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.