Finding the Fourth Proportional to 791,588,992.87, 1,187,382,700.91 and 542,348,675.11
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Solution
The fourth proportional to 791,588,992.87, 1,187,382,700.91 and 542,348,675.11 is: 813,522,472.50
Step by Step Solution
- Step 1: Write the proportion equation
791,588,992.87 : 1,187,382,700.91 = 542,348,675.11 : x - Step 2: Convert to fraction form
791,588,992.87/1,187,382,700.91 = 542,348,675.11/x - Step 3: Cross multiply
791,588,992.87x = 1,187,382,700.91 × 542,348,675.11 - Step 4: Simplify right side
791,588,992.87x = 643,975,434,687,072,000 - Step 5: Solve for x
x = 643,975,434,687,072,000/791,588,992.87 - Step 6: Final answer
x = 813,522,472.50
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1.5x scale
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.