Finding the Fourth Proportional to 527,802.10, 791,703.15 and 128,439.70
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Solution
The fourth proportional to 527,802.10, 791,703.15 and 128,439.70 is: 192,659.55
Step by Step Solution
- Step 1: Write the proportion equation
527,802.10 : 791,703.15 = 128,439.70 : x - Step 2: Convert to fraction form
527,802.10/791,703.15 = 128,439.70/x - Step 3: Cross multiply
527,802.10x = 791,703.15 × 128,439.70 - Step 4: Simplify right side
527,802.10x = 101,686,115,075.06 - Step 5: Solve for x
x = 101,686,115,075.06/527,802.10 - Step 6: Final answer
x = 192,659.55
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Similar ratio
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1.5x scale
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.