Finding the Fourth Proportional to 817,609.13, 1,128,300.61 and 455,118.63
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Solution
The fourth proportional to 817,609.13, 1,128,300.61 and 455,118.63 is: 628,063.71
Step by Step Solution
- Step 1: Write the proportion equation
817,609.13 : 1,128,300.61 = 455,118.63 : x - Step 2: Convert to fraction form
817,609.13/1,128,300.61 = 455,118.63/x - Step 3: Cross multiply
817,609.13x = 1,128,300.61 × 455,118.63 - Step 4: Simplify right side
817,609.13x = 513,510,626,713.57 - Step 5: Solve for x
x = 513,510,626,713.57/817,609.13 - Step 6: Final answer
x = 628,063.71
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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.