Finding the Fourth Proportional to 918,491.70, 1,377,763.44 and 253,643.70
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Solution
The fourth proportional to 918,491.70, 1,377,763.44 and 253,643.70 is: 380,472.70
Step by Step Solution
- Step 1: Write the proportion equation
918,491.70 : 1,377,763.44 = 253,643.70 : x - Step 2: Convert to fraction form
918,491.70/1,377,763.44 = 253,643.70/x - Step 3: Cross multiply
918,491.70x = 1,377,763.44 × 253,643.70 - Step 4: Simplify right side
918,491.70x = 349,461,016,646.33 - Step 5: Solve for x
x = 349,461,016,646.33/918,491.70 - Step 6: Final answer
x = 380,472.70
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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.