Finding the Fourth Proportional to 657,170.28, 906,985.76 and 385,305.12
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Solution
The fourth proportional to 657,170.28, 906,985.76 and 385,305.12 is: 531,774.28
Step by Step Solution
- Step 1: Write the proportion equation
657,170.28 : 906,985.76 = 385,305.12 : x - Step 2: Convert to fraction form
657,170.28/906,985.76 = 385,305.12/x - Step 3: Cross multiply
657,170.28x = 906,985.76 × 385,305.12 - Step 4: Simplify right side
657,170.28x = 349,466,255,168.57 - Step 5: Solve for x
x = 349,466,255,168.57/657,170.28 - Step 6: Final answer
x = 531,774.28
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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.