Finding the Fourth Proportional to 906,383,365.92, 1,354,415,263.20 and 680,562,908.64
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Solution
The fourth proportional to 906,383,365.92, 1,354,415,263.20 and 680,562,908.64 is: 1,016,970,109.66
Step by Step Solution
- Step 1: Write the proportion equation
906,383,365.92 : 1,354,415,263.20 = 680,562,908.64 : x - Step 2: Convert to fraction form
906,383,365.92/1,354,415,263.20 = 680,562,908.64/x - Step 3: Cross multiply
906,383,365.92x = 1,354,415,263.20 × 680,562,908.64 - Step 4: Simplify right side
906,383,365.92x = 921,764,791,029,803,136 - Step 5: Solve for x
x = 921,764,791,029,803,136/906,383,365.92 - Step 6: Final answer
x = 1,016,970,109.66
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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.