Finding the Fourth Proportional to 817,719.80, 1,128,318.54 and 455,134.24
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Solution
The fourth proportional to 817,719.80, 1,128,318.54 and 455,134.24 is: 628,010.23
Step by Step Solution
- Step 1: Write the proportion equation
817,719.80 : 1,128,318.54 = 455,134.24 : x - Step 2: Convert to fraction form
817,719.80/1,128,318.54 = 455,134.24/x - Step 3: Cross multiply
817,719.80x = 1,128,318.54 × 455,134.24 - Step 4: Simplify right side
817,719.80x = 513,536,401,180.81 - Step 5: Solve for x
x = 513,536,401,180.81/817,719.80 - Step 6: Final answer
x = 628,010.23
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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.