Finding the Fourth Proportional to 1,248,563,887.96, 1,722,995,617.98 and 691,645,212.76
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Solution
The fourth proportional to 1,248,563,887.96, 1,722,995,617.98 and 691,645,212.76 is: 954,457,903.42
Step by Step Solution
- Step 1: Write the proportion equation
1,248,563,887.96 : 1,722,995,617.98 = 691,645,212.76 : x - Step 2: Convert to fraction form
1,248,563,887.96/1,722,995,617.98 = 691,645,212.76/x - Step 3: Cross multiply
1,248,563,887.96x = 1,722,995,617.98 × 691,645,212.76 - Step 4: Simplify right side
1,248,563,887.96x = 1,191,701,670,782,324,736 - Step 5: Solve for x
x = 1,191,701,670,782,324,736/1,248,563,887.96 - Step 6: Final answer
x = 954,457,903.42
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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.