Finding the Fourth Proportional to 1,328,546,723.80, 1,992,820,085.70 and 591,615,203.80
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Solution
The fourth proportional to 1,328,546,723.80, 1,992,820,085.70 and 591,615,203.80 is: 887,422,805.70
Step by Step Solution
- Step 1: Write the proportion equation
1,328,546,723.80 : 1,992,820,085.70 = 591,615,203.80 : x - Step 2: Convert to fraction form
1,328,546,723.80/1,992,820,085.70 = 591,615,203.80/x - Step 3: Cross multiply
1,328,546,723.80x = 1,992,820,085.70 × 591,615,203.80 - Step 4: Simplify right side
1,328,546,723.80x = 1,178,982,661,138,138,880 - Step 5: Solve for x
x = 1,178,982,661,138,138,880/1,328,546,723.80 - Step 6: Final answer
x = 887,422,805.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.