Finding the Fourth Proportional to 818,152.23, 1,129,083.39 and 455,553.12
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Solution
The fourth proportional to 818,152.23, 1,129,083.39 and 455,553.12 is: 628,681.85
Step by Step Solution
- Step 1: Write the proportion equation
818,152.23 : 1,129,083.39 = 455,553.12 : x - Step 2: Convert to fraction form
818,152.23/1,129,083.39 = 455,553.12/x - Step 3: Cross multiply
818,152.23x = 1,129,083.39 × 455,553.12 - Step 4: Simplify right side
818,152.23x = 514,357,461,054.68 - Step 5: Solve for x
x = 514,357,461,054.68/818,152.23 - Step 6: Final answer
x = 628,681.85
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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.