Finding the Fourth Proportional to 818,283.15, 1,129,149.84 and 455,740.74
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Solution
The fourth proportional to 818,283.15, 1,129,149.84 and 455,740.74 is: 628,877.16
Step by Step Solution
- Step 1: Write the proportion equation
818,283.15 : 1,129,149.84 = 455,740.74 : x - Step 2: Convert to fraction form
818,283.15/1,129,149.84 = 455,740.74/x - Step 3: Cross multiply
818,283.15x = 1,129,149.84 × 455,740.74 - Step 4: Simplify right side
818,283.15x = 514,599,583,652.48 - Step 5: Solve for x
x = 514,599,583,652.48/818,283.15 - Step 6: Final answer
x = 628,877.16
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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.