Finding the Fourth Proportional to 991,788.84, 1,368,670.50 and 539,078.76
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Solution
The fourth proportional to 991,788.84, 1,368,670.50 and 539,078.76 is: 743,929.72
Step by Step Solution
- Step 1: Write the proportion equation
991,788.84 : 1,368,670.50 = 539,078.76 : x - Step 2: Convert to fraction form
991,788.84/1,368,670.50 = 539,078.76/x - Step 3: Cross multiply
991,788.84x = 1,368,670.50 × 539,078.76 - Step 4: Simplify right side
991,788.84x = 737,821,195,988.58 - Step 5: Solve for x
x = 737,821,195,988.58/991,788.84 - Step 6: Final answer
x = 743,929.72
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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.