Finding the Fourth Proportional to 3,919,492,494.06, 5,405,266,420.11 and 2,860,543,128.30
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Solution
The fourth proportional to 3,919,492,494.06, 5,405,266,420.11 and 2,860,543,128.30 is: 3,944,897,901.48
Step by Step Solution
- Step 1: Write the proportion equation
3,919,492,494.06 : 5,405,266,420.11 = 2,860,543,128.30 : x - Step 2: Convert to fraction form
3,919,492,494.06/5,405,266,420.11 = 2,860,543,128.30/x - Step 3: Cross multiply
3,919,492,494.06x = 5,405,266,420.11 × 2,860,543,128.30 - Step 4: Simplify right side
3,919,492,494.06x = 15,461,997,714,676,402,176 - Step 5: Solve for x
x = 15,461,997,714,676,402,176/3,919,492,494.06 - Step 6: Final answer
x = 3,944,897,901.48
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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.