Finding the Fourth Proportional to 688,327,989,820.93, 949,893,540,970.28 and 379,672,426,936.99
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Solution
The fourth proportional to 688,327,989,820.93, 949,893,540,970.28 and 379,672,426,936.99 is: 523,948,453,884.29
Step by Step Solution
- Step 1: Write the proportion equation
688,327,989,820.93 : 949,893,540,970.28 = 379,672,426,936.99 : x - Step 2: Convert to fraction form
688,327,989,820.93/949,893,540,970.28 = 379,672,426,936.99/x - Step 3: Cross multiply
688,327,989,820.93x = 949,893,540,970.28 × 379,672,426,936.99 - Step 4: Simplify right side
688,327,989,820.93x = 360,648,386,031,957,351,333,888 - Step 5: Solve for x
x = 360,648,386,031,957,351,333,888/688,327,989,820.93 - Step 6: Final answer
x = 523,948,453,884.29
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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.