Finding the Fourth Proportional to 874,729,410.76, 1,207,128,757.26 and 478,277,982.28
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Solution
The fourth proportional to 874,729,410.76, 1,207,128,757.26 and 478,277,982.28 is: 660,024,802.27
Step by Step Solution
- Step 1: Write the proportion equation
874,729,410.76 : 1,207,128,757.26 = 478,277,982.28 : x - Step 2: Convert to fraction form
874,729,410.76/1,207,128,757.26 = 478,277,982.28/x - Step 3: Cross multiply
874,729,410.76x = 1,207,128,757.26 × 478,277,982.28 - Step 4: Simplify right side
874,729,410.76x = 577,343,106,374,476,672 - Step 5: Solve for x
x = 577,343,106,374,476,672/874,729,410.76 - Step 6: Final answer
x = 660,024,802.27
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Double scale
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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.