Finding the Fourth Proportional to 2,116,486,970.38, 2,920,037,121.05 and 1,199,807,721.75
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Solution
The fourth proportional to 2,116,486,970.38, 2,920,037,121.05 and 1,199,807,721.75 is: 1,655,329,390.00
Step by Step Solution
- Step 1: Write the proportion equation
2,116,486,970.38 : 2,920,037,121.05 = 1,199,807,721.75 : x - Step 2: Convert to fraction form
2,116,486,970.38/2,920,037,121.05 = 1,199,807,721.75/x - Step 3: Cross multiply
2,116,486,970.38x = 2,920,037,121.05 × 1,199,807,721.75 - Step 4: Simplify right side
2,116,486,970.38x = 3,503,483,085,634,066,432 - Step 5: Solve for x
x = 3,503,483,085,634,066,432/2,116,486,970.38 - Step 6: Final answer
x = 1,655,329,390.00
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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.