Finding the Fourth Proportional to 1,781,678.16, 2,455,503.12 and 1,297,476.36
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Solution
The fourth proportional to 1,781,678.16, 2,455,503.12 and 1,297,476.36 is: 1,788,177.75
Step by Step Solution
- Step 1: Write the proportion equation
1,781,678.16 : 2,455,503.12 = 1,297,476.36 : x - Step 2: Convert to fraction form
1,781,678.16/2,455,503.12 = 1,297,476.36/x - Step 3: Cross multiply
1,781,678.16x = 2,455,503.12 × 1,297,476.36 - Step 4: Simplify right side
1,781,678.16x = 3,185,957,250,106.24 - Step 5: Solve for x
x = 3,185,957,250,106.24/1,781,678.16 - Step 6: Final answer
x = 1,788,177.75
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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.