Finding the Fourth Proportional to 791,448,129.61, 1,187,172,231.33 and 542,207,615.02
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Solution
The fourth proportional to 791,448,129.61, 1,187,172,231.33 and 542,207,615.02 is: 813,311,447.82
Step by Step Solution
- Step 1: Write the proportion equation
791,448,129.61 : 1,187,172,231.33 = 542,207,615.02 : x - Step 2: Convert to fraction form
791,448,129.61/1,187,172,231.33 = 542,207,615.02/x - Step 3: Cross multiply
791,448,129.61x = 1,187,172,231.33 × 542,207,615.02 - Step 4: Simplify right side
791,448,129.61x = 643,693,824,167,410,944 - Step 5: Solve for x
x = 643,693,824,167,410,944/791,448,129.61 - Step 6: Final answer
x = 813,311,447.82
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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.