Finding the Fourth Proportional to 817,774.02, 1,128,528.06 and 455,190.12
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Solution
The fourth proportional to 817,774.02, 1,128,528.06 and 455,190.12 is: 628,162.32
Step by Step Solution
- Step 1: Write the proportion equation
817,774.02 : 1,128,528.06 = 455,190.12 : x - Step 2: Convert to fraction form
817,774.02/1,128,528.06 = 455,190.12/x - Step 3: Cross multiply
817,774.02x = 1,128,528.06 × 455,190.12 - Step 4: Simplify right side
817,774.02x = 513,694,823,054.77 - Step 5: Solve for x
x = 513,694,823,054.77/817,774.02 - Step 6: Final answer
x = 628,162.32
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1.5x scale
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.