Finding the Fourth Proportional to 561,209.81, 774,440.64 and 306,511.79
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Solution
The fourth proportional to 561,209.81, 774,440.64 and 306,511.79 is: 422,970.48
Step by Step Solution
- Step 1: Write the proportion equation
561,209.81 : 774,440.64 = 306,511.79 : x - Step 2: Convert to fraction form
561,209.81/774,440.64 = 306,511.79/x - Step 3: Cross multiply
561,209.81x = 774,440.64 × 306,511.79 - Step 4: Simplify right side
561,209.81x = 237,375,182,942.94 - Step 5: Solve for x
x = 237,375,182,942.94/561,209.81 - Step 6: Final answer
x = 422,970.48
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1.5x scale
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.