Finding the Fourth Proportional to 318,877,439.94, 478,316,165.49 and 76,540,343.94
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Solution
The fourth proportional to 318,877,439.94, 478,316,165.49 and 76,540,343.94 is: 114,810,517.25
Step by Step Solution
- Step 1: Write the proportion equation
318,877,439.94 : 478,316,165.49 = 76,540,343.94 : x - Step 2: Convert to fraction form
318,877,439.94/478,316,165.49 = 76,540,343.94/x - Step 3: Cross multiply
318,877,439.94x = 478,316,165.49 × 76,540,343.94 - Step 4: Simplify right side
318,877,439.94x = 36,610,483,818,666,560 - Step 5: Solve for x
x = 36,610,483,818,666,560/318,877,439.94 - Step 6: Final answer
x = 114,810,517.25
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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.