Finding the Fourth Proportional to 1,211,134,113.80, 1,817,551,476.30 and 521,536,272.20
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Solution
The fourth proportional to 1,211,134,113.80, 1,817,551,476.30 and 521,536,272.20 is: 782,670,565.28
Step by Step Solution
- Step 1: Write the proportion equation
1,211,134,113.80 : 1,817,551,476.30 = 521,536,272.20 : x - Step 2: Convert to fraction form
1,211,134,113.80/1,817,551,476.30 = 521,536,272.20/x - Step 3: Cross multiply
1,211,134,113.80x = 1,817,551,476.30 × 521,536,272.20 - Step 4: Simplify right side
1,211,134,113.80x = 947,919,021,481,108,608 - Step 5: Solve for x
x = 947,919,021,481,108,608/1,211,134,113.80 - Step 6: Final answer
x = 782,670,565.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.