Finding the Fourth Proportional to 1,389,919,572.72, 2,092,393,623.74 and 1,266,217,213.90
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Solution
The fourth proportional to 1,389,919,572.72, 2,092,393,623.74 and 1,266,217,213.90 is: 1,906,171,318.57
Step by Step Solution
- Step 1: Write the proportion equation
1,389,919,572.72 : 2,092,393,623.74 = 1,266,217,213.90 : x - Step 2: Convert to fraction form
1,389,919,572.72/2,092,393,623.74 = 1,266,217,213.90/x - Step 3: Cross multiply
1,389,919,572.72x = 2,092,393,623.74 × 1,266,217,213.90 - Step 4: Simplify right side
1,389,919,572.72x = 2,649,424,824,634,187,776 - Step 5: Solve for x
x = 2,649,424,824,634,187,776/1,389,919,572.72 - Step 6: Final answer
x = 1,906,171,318.57
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.