Finding the Fourth Proportional to 746,079.12, 1,029,574.80 and 406,540.08
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Solution
The fourth proportional to 746,079.12, 1,029,574.80 and 406,540.08 is: 561,017.47
Step by Step Solution
- Step 1: Write the proportion equation
746,079.12 : 1,029,574.80 = 406,540.08 : x - Step 2: Convert to fraction form
746,079.12/1,029,574.80 = 406,540.08/x - Step 3: Cross multiply
746,079.12x = 1,029,574.80 × 406,540.08 - Step 4: Simplify right side
746,079.12x = 418,563,421,557.98 - Step 5: Solve for x
x = 418,563,421,557.98/746,079.12 - Step 6: Final answer
x = 561,017.47
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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.