Finding the Fourth Proportional to 817,611.47, 1,128,303.82 and 455,120.96
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Solution
The fourth proportional to 817,611.47, 1,128,303.82 and 455,120.96 is: 628,066.92
Step by Step Solution
- Step 1: Write the proportion equation
817,611.47 : 1,128,303.82 = 455,120.96 : x - Step 2: Convert to fraction form
817,611.47/1,128,303.82 = 455,120.96/x - Step 3: Cross multiply
817,611.47x = 1,128,303.82 × 455,120.96 - Step 4: Simplify right side
817,611.47x = 513,514,710,950.75 - Step 5: Solve for x
x = 513,514,710,950.75/817,611.47 - Step 6: Final answer
x = 628,066.92
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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.