Finding the Fourth Proportional to 1,190,129.40, 1,642,376.70 and 653,585.40
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Solution
The fourth proportional to 1,190,129.40, 1,642,376.70 and 653,585.40 is: 901,946.82
Step by Step Solution
- Step 1: Write the proportion equation
1,190,129.40 : 1,642,376.70 = 653,585.40 : x - Step 2: Convert to fraction form
1,190,129.40/1,642,376.70 = 653,585.40/x - Step 3: Cross multiply
1,190,129.40x = 1,642,376.70 × 653,585.40 - Step 4: Simplify right side
1,190,129.40x = 1,073,433,432,420.18 - Step 5: Solve for x
x = 1,073,433,432,420.18/1,190,129.40 - Step 6: Final answer
x = 901,946.82
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1.5x scale
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.