Finding the Fourth Proportional to 1,258,132.20, 1,736,365.86 and 748,836.20
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Solution
The fourth proportional to 1,258,132.20, 1,736,365.86 and 748,836.20 is: 1,033,479.32
Step by Step Solution
- Step 1: Write the proportion equation
1,258,132.20 : 1,736,365.86 = 748,836.20 : x - Step 2: Convert to fraction form
1,258,132.20/1,736,365.86 = 748,836.20/x - Step 3: Cross multiply
1,258,132.20x = 1,736,365.86 × 748,836.20 - Step 4: Simplify right side
1,258,132.20x = 1,300,253,612,412.13 - Step 5: Solve for x
x = 1,300,253,612,412.13/1,258,132.20 - Step 6: Final answer
x = 1,033,479.32
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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.