Finding the Fourth Proportional to 991,307.48, 1,367,959.74 and 561,578.84
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Solution
The fourth proportional to 991,307.48, 1,367,959.74 and 561,578.84 is: 774,953.54
Step by Step Solution
- Step 1: Write the proportion equation
991,307.48 : 1,367,959.74 = 561,578.84 : x - Step 2: Convert to fraction form
991,307.48/1,367,959.74 = 561,578.84/x - Step 3: Cross multiply
991,307.48x = 1,367,959.74 × 561,578.84 - Step 4: Simplify right side
991,307.48x = 768,217,243,955.90 - Step 5: Solve for x
x = 768,217,243,955.90/991,307.48 - Step 6: Final answer
x = 774,953.54
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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.