Finding the Fourth Proportional to 817,128.12, 1,225,692.18 and 256,207.80
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Solution
The fourth proportional to 817,128.12, 1,225,692.18 and 256,207.80 is: 384,311.70
Step by Step Solution
- Step 1: Write the proportion equation
817,128.12 : 1,225,692.18 = 256,207.80 : x - Step 2: Convert to fraction form
817,128.12/1,225,692.18 = 256,207.80/x - Step 3: Cross multiply
817,128.12x = 1,225,692.18 × 256,207.80 - Step 4: Simplify right side
817,128.12x = 314,031,896,915.00 - Step 5: Solve for x
x = 314,031,896,915.00/817,128.12 - Step 6: Final answer
x = 384,311.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.