Finding the Fourth Proportional to 2,811,351,139.68, 3,879,657,878.40 and 1,541,189,867.52
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Solution
The fourth proportional to 2,811,351,139.68, 3,879,657,878.40 and 1,541,189,867.52 is: 2,126,838,347.31
Step by Step Solution
- Step 1: Write the proportion equation
2,811,351,139.68 : 3,879,657,878.40 = 1,541,189,867.52 : x - Step 2: Convert to fraction form
2,811,351,139.68/3,879,657,878.40 = 1,541,189,867.52/x - Step 3: Cross multiply
2,811,351,139.68x = 3,879,657,878.40 × 1,541,189,867.52 - Step 4: Simplify right side
2,811,351,139.68x = 5,979,289,411,634,220,032 - Step 5: Solve for x
x = 5,979,289,411,634,220,032/2,811,351,139.68 - Step 6: Final answer
x = 2,126,838,347.31
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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.