Finding the Fourth Proportional to 761,574.51, 1,051,451.41 and 490,115.19
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Solution
The fourth proportional to 761,574.51, 1,051,451.41 and 490,115.19 is: 676,666.96
Step by Step Solution
- Step 1: Write the proportion equation
761,574.51 : 1,051,451.41 = 490,115.19 : x - Step 2: Convert to fraction form
761,574.51/1,051,451.41 = 490,115.19/x - Step 3: Cross multiply
761,574.51x = 1,051,451.41 × 490,115.19 - Step 4: Simplify right side
761,574.51x = 515,332,307,587.92 - Step 5: Solve for x
x = 515,332,307,587.92/761,574.51 - Step 6: Final answer
x = 676,666.96
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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.