Finding the Fourth Proportional to 1,390,605.39, 2,086,507.45 and 750,782.07
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Solution
The fourth proportional to 1,390,605.39, 2,086,507.45 and 750,782.07 is: 1,126,496.70
Step by Step Solution
- Step 1: Write the proportion equation
1,390,605.39 : 2,086,507.45 = 750,782.07 : x - Step 2: Convert to fraction form
1,390,605.39/2,086,507.45 = 750,782.07/x - Step 3: Cross multiply
1,390,605.39x = 2,086,507.45 × 750,782.07 - Step 4: Simplify right side
1,390,605.39x = 1,566,512,383,319.90 - Step 5: Solve for x
x = 1,566,512,383,319.90/1,390,605.39 - Step 6: Final answer
x = 1,126,496.70
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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.