Finding the Fourth Proportional to 1,629,611,519.99, 2,248,918,217.34 and 915,272,955.75
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Solution
The fourth proportional to 1,629,611,519.99, 2,248,918,217.34 and 915,272,955.75 is: 1,263,107,187.67
Step by Step Solution
- Step 1: Write the proportion equation
1,629,611,519.99 : 2,248,918,217.34 = 915,272,955.75 : x - Step 2: Convert to fraction form
1,629,611,519.99/2,248,918,217.34 = 915,272,955.75/x - Step 3: Cross multiply
1,629,611,519.99x = 2,248,918,217.34 × 915,272,955.75 - Step 4: Simplify right side
1,629,611,519.99x = 2,058,374,024,010,822,400 - Step 5: Solve for x
x = 2,058,374,024,010,822,400/1,629,611,519.99 - Step 6: Final answer
x = 1,263,107,187.67
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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.