Finding the Fourth Proportional to 912,719,295.87, 1,361,405,138.76 and 828,929,210.75
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Solution
The fourth proportional to 912,719,295.87, 1,361,405,138.76 and 828,929,210.75 is: 1,236,424,487.01
Step by Step Solution
- Step 1: Write the proportion equation
912,719,295.87 : 1,361,405,138.76 = 828,929,210.75 : x - Step 2: Convert to fraction form
912,719,295.87/1,361,405,138.76 = 828,929,210.75/x - Step 3: Cross multiply
912,719,295.87x = 1,361,405,138.76 × 828,929,210.75 - Step 4: Simplify right side
912,719,295.87x = 1,128,508,487,176,514,048 - Step 5: Solve for x
x = 1,128,508,487,176,514,048/912,719,295.87 - Step 6: Final answer
x = 1,236,424,487.01
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.