Finding the Fourth Proportional to 485,420,360.08, 728,648,687.80 and 209,207,887.96
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Solution
The fourth proportional to 485,420,360.08, 728,648,687.80 and 209,207,887.96 is: 314,035,144.74
Step by Step Solution
- Step 1: Write the proportion equation
485,420,360.08 : 728,648,687.80 = 209,207,887.96 : x - Step 2: Convert to fraction form
485,420,360.08/728,648,687.80 = 209,207,887.96/x - Step 3: Cross multiply
485,420,360.08x = 728,648,687.80 × 209,207,887.96 - Step 4: Simplify right side
485,420,360.08x = 152,439,053,037,903,296 - Step 5: Solve for x
x = 152,439,053,037,903,296/485,420,360.08 - Step 6: Final answer
x = 314,035,144.74
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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.