Finding the Fourth Proportional to 2,187,056.75, 3,018,138.36 and 1,281,638.75
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Solution
The fourth proportional to 2,187,056.75, 3,018,138.36 and 1,281,638.75 is: 1,768,661.50
Step by Step Solution
- Step 1: Write the proportion equation
2,187,056.75 : 3,018,138.36 = 1,281,638.75 : x - Step 2: Convert to fraction form
2,187,056.75/3,018,138.36 = 1,281,638.75/x - Step 3: Cross multiply
2,187,056.75x = 3,018,138.36 × 1,281,638.75 - Step 4: Simplify right side
2,187,056.75x = 3,868,163,075,037.45 - Step 5: Solve for x
x = 3,868,163,075,037.45/2,187,056.75 - Step 6: Final answer
x = 1,768,661.50
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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.