Finding the Fourth Proportional to 980,051,695.20, 1,470,077,542.80 and 889,352,431.20
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Solution
The fourth proportional to 980,051,695.20, 1,470,077,542.80 and 889,352,431.20 is: 1,334,028,646.80
Step by Step Solution
- Step 1: Write the proportion equation
980,051,695.20 : 1,470,077,542.80 = 889,352,431.20 : x - Step 2: Convert to fraction form
980,051,695.20/1,470,077,542.80 = 889,352,431.20/x - Step 3: Cross multiply
980,051,695.20x = 1,470,077,542.80 × 889,352,431.20 - Step 4: Simplify right side
980,051,695.20x = 1,307,417,036,741,702,144 - Step 5: Solve for x
x = 1,307,417,036,741,702,144/980,051,695.20 - Step 6: Final answer
x = 1,334,028,646.80
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1.5x scale
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.