Finding the Fourth Proportional to 1,109,600,848.26, 1,530,668,621.81 and 686,079,122.58
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Solution
The fourth proportional to 1,109,600,848.26, 1,530,668,621.81 and 686,079,122.58 is: 946,430,229.09
Step by Step Solution
- Step 1: Write the proportion equation
1,109,600,848.26 : 1,530,668,621.81 = 686,079,122.58 : x - Step 2: Convert to fraction form
1,109,600,848.26/1,530,668,621.81 = 686,079,122.58/x - Step 3: Cross multiply
1,109,600,848.26x = 1,530,668,621.81 × 686,079,122.58 - Step 4: Simplify right side
1,109,600,848.26x = 1,050,159,785,012,142,720 - Step 5: Solve for x
x = 1,050,159,785,012,142,720/1,109,600,848.26 - Step 6: Final answer
x = 946,430,229.09
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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.