Finding the Fourth Proportional to 1,131,352,739.10, 1,561,402,695.96 and 685,303,014.65
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Solution
The fourth proportional to 1,131,352,739.10, 1,561,402,695.96 and 685,303,014.65 is: 945,800,489.66
Step by Step Solution
- Step 1: Write the proportion equation
1,131,352,739.10 : 1,561,402,695.96 = 685,303,014.65 : x - Step 2: Convert to fraction form
1,131,352,739.10/1,561,402,695.96 = 685,303,014.65/x - Step 3: Cross multiply
1,131,352,739.10x = 1,561,402,695.96 × 685,303,014.65 - Step 4: Simplify right side
1,131,352,739.10x = 1,070,033,974,616,218,368 - Step 5: Solve for x
x = 1,070,033,974,616,218,368/1,131,352,739.10 - Step 6: Final answer
x = 945,800,489.66
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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.