Finding the Fourth Proportional to 688,327,989,819.93, 949,893,540,968.90 and 379,672,426,935.99
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Solution
The fourth proportional to 688,327,989,819.93, 949,893,540,968.90 and 379,672,426,935.99 is: 523,948,453,882.91
Step by Step Solution
- Step 1: Write the proportion equation
688,327,989,819.93 : 949,893,540,968.90 = 379,672,426,935.99 : x - Step 2: Convert to fraction form
688,327,989,819.93/949,893,540,968.90 = 379,672,426,935.99/x - Step 3: Cross multiply
688,327,989,819.93x = 949,893,540,968.90 × 379,672,426,935.99 - Step 4: Simplify right side
688,327,989,819.93x = 360,648,386,030,483,506,462,720 - Step 5: Solve for x
x = 360,648,386,030,483,506,462,720/688,327,989,819.93 - Step 6: Final answer
x = 523,948,453,882.91
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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.