Finding the Fourth Proportional to 817,756.79, 1,128,504.29 and 455,172.84
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Solution
The fourth proportional to 817,756.79, 1,128,504.29 and 455,172.84 is: 628,138.48
Step by Step Solution
- Step 1: Write the proportion equation
817,756.79 : 1,128,504.29 = 455,172.84 : x - Step 2: Convert to fraction form
817,756.79/1,128,504.29 = 455,172.84/x - Step 3: Cross multiply
817,756.79x = 1,128,504.29 × 455,172.84 - Step 4: Simplify right side
817,756.79x = 513,664,500,355.62 - Step 5: Solve for x
x = 513,664,500,355.62/817,756.79 - Step 6: Final answer
x = 628,138.48
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.