Finding the Fourth Proportional to 1,122,257.80, 1,683,436.68 and 411,898.32
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Solution
The fourth proportional to 1,122,257.80, 1,683,436.68 and 411,898.32 is: 617,865.82
Step by Step Solution
- Step 1: Write the proportion equation
1,122,257.80 : 1,683,436.68 = 411,898.32 : x - Step 2: Convert to fraction form
1,122,257.80/1,683,436.68 = 411,898.32/x - Step 3: Cross multiply
1,122,257.80x = 1,683,436.68 × 411,898.32 - Step 4: Simplify right side
1,122,257.80x = 693,404,740,318.38 - Step 5: Solve for x
x = 693,404,740,318.38/1,122,257.80 - Step 6: Final answer
x = 617,865.82
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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.