Finding the Fourth Proportional to 2,163,223.48, 2,985,647.76 and 1,389,821.13
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Solution
The fourth proportional to 2,163,223.48, 2,985,647.76 and 1,389,821.13 is: 1,918,209.74
Step by Step Solution
- Step 1: Write the proportion equation
2,163,223.48 : 2,985,647.76 = 1,389,821.13 : x - Step 2: Convert to fraction form
2,163,223.48/2,985,647.76 = 1,389,821.13/x - Step 3: Cross multiply
2,163,223.48x = 2,985,647.76 × 1,389,821.13 - Step 4: Simplify right side
2,163,223.48x = 4,149,516,354,781.35 - Step 5: Solve for x
x = 4,149,516,354,781.35/2,163,223.48 - Step 6: Final answer
x = 1,918,209.74
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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.