Finding the Fourth Proportional to 1,187,780.14, 1,638,750.99 and 671,483.98
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Solution
The fourth proportional to 1,187,780.14, 1,638,750.99 and 671,483.98 is: 926,429.90
Step by Step Solution
- Step 1: Write the proportion equation
1,187,780.14 : 1,638,750.99 = 671,483.98 : x - Step 2: Convert to fraction form
1,187,780.14/1,638,750.99 = 671,483.98/x - Step 3: Cross multiply
1,187,780.14x = 1,638,750.99 × 671,483.98 - Step 4: Simplify right side
1,187,780.14x = 1,100,395,036,994.14 - Step 5: Solve for x
x = 1,100,395,036,994.14/1,187,780.14 - Step 6: Final answer
x = 926,429.90
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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.