Finding the Fourth Proportional to 1,311,659,878.13, 1,967,834,402.28 and 471,387,459.79
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Solution
The fourth proportional to 1,311,659,878.13, 1,967,834,402.28 and 471,387,459.79 is: 707,205,027.50
Step by Step Solution
- Step 1: Write the proportion equation
1,311,659,878.13 : 1,967,834,402.28 = 471,387,459.79 : x - Step 2: Convert to fraction form
1,311,659,878.13/1,967,834,402.28 = 471,387,459.79/x - Step 3: Cross multiply
1,311,659,878.13x = 1,967,834,402.28 × 471,387,459.79 - Step 4: Simplify right side
1,311,659,878.13x = 927,612,460,186,171,008 - Step 5: Solve for x
x = 927,612,460,186,171,008/1,311,659,878.13 - Step 6: Final answer
x = 707,205,027.50
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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.