Finding the Fourth Proportional to 9,391,038,819.44, 12,959,459,225.52 and 5,161,860,297.68
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Solution
The fourth proportional to 9,391,038,819.44, 12,959,459,225.52 and 5,161,860,297.68 is: 7,123,271,380.49
Step by Step Solution
- Step 1: Write the proportion equation
9,391,038,819.44 : 12,959,459,225.52 = 5,161,860,297.68 : x - Step 2: Convert to fraction form
9,391,038,819.44/12,959,459,225.52 = 5,161,860,297.68/x - Step 3: Cross multiply
9,391,038,819.44x = 12,959,459,225.52 × 5,161,860,297.68 - Step 4: Simplify right side
9,391,038,819.44x = 66,894,918,055,614,496,768 - Step 5: Solve for x
x = 66,894,918,055,614,496,768/9,391,038,819.44 - Step 6: Final answer
x = 7,123,271,380.49
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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.