Finding the Fourth Proportional to 817,689.07, 1,128,399.44 and 455,113.02
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Solution
The fourth proportional to 817,689.07, 1,128,399.44 and 455,113.02 is: 628,049.58
Step by Step Solution
- Step 1: Write the proportion equation
817,689.07 : 1,128,399.44 = 455,113.02 : x - Step 2: Convert to fraction form
817,689.07/1,128,399.44 = 455,113.02/x - Step 3: Cross multiply
817,689.07x = 1,128,399.44 × 455,113.02 - Step 4: Simplify right side
817,689.07x = 513,549,276,904.71 - Step 5: Solve for x
x = 513,549,276,904.71/817,689.07 - Step 6: Final answer
x = 628,049.58
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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.