Finding the Fourth Proportional to 7,178,957.10, 9,905,187.87 and 4,387,368.24
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Solution
The fourth proportional to 7,178,957.10, 9,905,187.87 and 4,387,368.24 is: 6,053,484.66
Step by Step Solution
- Step 1: Write the proportion equation
7,178,957.10 : 9,905,187.87 = 4,387,368.24 : x - Step 2: Convert to fraction form
7,178,957.10/9,905,187.87 = 4,387,368.24/x - Step 3: Cross multiply
7,178,957.10x = 9,905,187.87 × 4,387,368.24 - Step 4: Simplify right side
7,178,957.10x = 43,457,706,672,071.25 - Step 5: Solve for x
x = 43,457,706,672,071.25/7,178,957.10 - Step 6: Final answer
x = 6,053,484.66
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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.