Finding the Fourth Proportional to 1,121,702.98, 1,547,942.12 and 612,405.36
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Solution
The fourth proportional to 1,121,702.98, 1,547,942.12 and 612,405.36 is: 845,115.03
Step by Step Solution
- Step 1: Write the proportion equation
1,121,702.98 : 1,547,942.12 = 612,405.36 : x - Step 2: Convert to fraction form
1,121,702.98/1,547,942.12 = 612,405.36/x - Step 3: Cross multiply
1,121,702.98x = 1,547,942.12 × 612,405.36 - Step 4: Simplify right side
1,121,702.98x = 947,968,051,257.76 - Step 5: Solve for x
x = 947,968,051,257.76/1,121,702.98 - Step 6: Final answer
x = 845,115.03
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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.