Finding the Fourth Proportional to 991,384.40, 1,368,113.88 and 561,744.08
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Solution
The fourth proportional to 991,384.40, 1,368,113.88 and 561,744.08 is: 775,208.76
Step by Step Solution
- Step 1: Write the proportion equation
991,384.40 : 1,368,113.88 = 561,744.08 : x - Step 2: Convert to fraction form
991,384.40/1,368,113.88 = 561,744.08/x - Step 3: Cross multiply
991,384.40x = 1,368,113.88 × 561,744.08 - Step 4: Simplify right side
991,384.40x = 768,529,872,855.83 - Step 5: Solve for x
x = 768,529,872,855.83/991,384.40 - Step 6: Final answer
x = 775,208.76
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.