Finding the Fourth Proportional to 990,935.31, 1,367,508.75 and 561,304.63
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Solution
The fourth proportional to 990,935.31, 1,367,508.75 and 561,304.63 is: 774,610.59
Step by Step Solution
- Step 1: Write the proportion equation
990,935.31 : 1,367,508.75 = 561,304.63 : x - Step 2: Convert to fraction form
990,935.31/1,367,508.75 = 561,304.63/x - Step 3: Cross multiply
990,935.31x = 1,367,508.75 × 561,304.63 - Step 4: Simplify right side
990,935.31x = 767,588,989,521.74 - Step 5: Solve for x
x = 767,588,989,521.74/990,935.31 - Step 6: Final answer
x = 774,610.59
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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.