Finding the Fourth Proportional to 7,178,026.42, 9,905,326.95 and 4,277,352.70
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Solution
The fourth proportional to 7,178,026.42, 9,905,326.95 and 4,277,352.70 is: 5,902,538.45
Step by Step Solution
- Step 1: Write the proportion equation
7,178,026.42 : 9,905,326.95 = 4,277,352.70 : x - Step 2: Convert to fraction form
7,178,026.42/9,905,326.95 = 4,277,352.70/x - Step 3: Cross multiply
7,178,026.42x = 9,905,326.95 × 4,277,352.70 - Step 4: Simplify right side
7,178,026.42x = 42,368,576,973,965.27 - Step 5: Solve for x
x = 42,368,576,973,965.27/7,178,026.42 - Step 6: Final answer
x = 5,902,538.45
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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.