Finding the Fourth Proportional to 561,345.12, 774,628.08 and 306,649.44
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Solution
The fourth proportional to 561,345.12, 774,628.08 and 306,649.44 is: 423,160.83
Step by Step Solution
- Step 1: Write the proportion equation
561,345.12 : 774,628.08 = 306,649.44 : x - Step 2: Convert to fraction form
561,345.12/774,628.08 = 306,649.44/x - Step 3: Cross multiply
561,345.12x = 774,628.08 × 306,649.44 - Step 4: Simplify right side
561,345.12x = 237,539,266,940.28 - Step 5: Solve for x
x = 237,539,266,940.28/561,345.12 - Step 6: Final answer
x = 423,160.83
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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.