Finding the Fourth Proportional to 2,115,642.96, 2,918,866.12 and 1,352,136.96
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Solution
The fourth proportional to 2,115,642.96, 2,918,866.12 and 1,352,136.96 is: 1,865,488.10
Step by Step Solution
- Step 1: Write the proportion equation
2,115,642.96 : 2,918,866.12 = 1,352,136.96 : x - Step 2: Convert to fraction form
2,115,642.96/2,918,866.12 = 1,352,136.96/x - Step 3: Cross multiply
2,115,642.96x = 2,918,866.12 × 1,352,136.96 - Step 4: Simplify right side
2,115,642.96x = 3,946,706,762,143.80 - Step 5: Solve for x
x = 3,946,706,762,143.80/2,115,642.96 - Step 6: Final answer
x = 1,865,488.10
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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.