Finding the Fourth Proportional to 1,634,485,313.63, 2,255,637,367.81 and 891,977,202.83
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Solution
The fourth proportional to 1,634,485,313.63, 2,255,637,367.81 and 891,977,202.83 is: 1,230,954,535.45
Step by Step Solution
- Step 1: Write the proportion equation
1,634,485,313.63 : 2,255,637,367.81 = 891,977,202.83 : x - Step 2: Convert to fraction form
1,634,485,313.63/2,255,637,367.81 = 891,977,202.83/x - Step 3: Cross multiply
1,634,485,313.63x = 2,255,637,367.81 × 891,977,202.83 - Step 4: Simplify right side
1,634,485,313.63x = 2,011,977,109,944,697,344 - Step 5: Solve for x
x = 2,011,977,109,944,697,344/1,634,485,313.63 - Step 6: Final answer
x = 1,230,954,535.45
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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.