Finding the Fourth Proportional to 1,246,632,129.60, 1,720,351,425.84 and 682,120,718.04
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Solution
The fourth proportional to 1,246,632,129.60, 1,720,351,425.84 and 682,120,718.04 is: 941,326,091.32
Step by Step Solution
- Step 1: Write the proportion equation
1,246,632,129.60 : 1,720,351,425.84 = 682,120,718.04 : x - Step 2: Convert to fraction form
1,246,632,129.60/1,720,351,425.84 = 682,120,718.04/x - Step 3: Cross multiply
1,246,632,129.60x = 1,720,351,425.84 × 682,120,718.04 - Step 4: Simplify right side
1,246,632,129.60x = 1,173,487,349,875,118,592 - Step 5: Solve for x
x = 1,173,487,349,875,118,592/1,246,632,129.60 - Step 6: Final answer
x = 941,326,091.32
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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.