Finding the Fourth Proportional to 817,768.13, 1,128,494.84 and 455,182.65
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Solution
The fourth proportional to 817,768.13, 1,128,494.84 and 455,182.65 is: 628,138.04
Step by Step Solution
- Step 1: Write the proportion equation
817,768.13 : 1,128,494.84 = 455,182.65 : x - Step 2: Convert to fraction form
817,768.13/1,128,494.84 = 455,182.65/x - Step 3: Cross multiply
817,768.13x = 1,128,494.84 × 455,182.65 - Step 4: Simplify right side
817,768.13x = 513,671,269,506.61 - Step 5: Solve for x
x = 513,671,269,506.61/817,768.13 - Step 6: Final answer
x = 628,138.04
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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.