Finding the Fourth Proportional to 458,470,127.80, 687,705,191.70 and 228,887,615.80
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Solution
The fourth proportional to 458,470,127.80, 687,705,191.70 and 228,887,615.80 is: 343,331,423.70
Step by Step Solution
- Step 1: Write the proportion equation
458,470,127.80 : 687,705,191.70 = 228,887,615.80 : x - Step 2: Convert to fraction form
458,470,127.80/687,705,191.70 = 228,887,615.80/x - Step 3: Cross multiply
458,470,127.80x = 687,705,191.70 × 228,887,615.80 - Step 4: Simplify right side
458,470,127.80x = 157,407,201,701,494,976 - Step 5: Solve for x
x = 157,407,201,701,494,976/458,470,127.80 - Step 6: Final answer
x = 343,331,423.70
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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.