Finding the Fourth Proportional to 818,352.87, 1,129,362.01 and 455,776.71
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Solution
The fourth proportional to 818,352.87, 1,129,362.01 and 455,776.71 is: 628,991.38
Step by Step Solution
- Step 1: Write the proportion equation
818,352.87 : 1,129,362.01 = 455,776.71 : x - Step 2: Convert to fraction form
818,352.87/1,129,362.01 = 455,776.71/x - Step 3: Cross multiply
818,352.87x = 1,129,362.01 × 455,776.71 - Step 4: Simplify right side
818,352.87x = 514,736,901,316.79 - Step 5: Solve for x
x = 514,736,901,316.79/818,352.87 - Step 6: Final answer
x = 628,991.38
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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.