Finding the Fourth Proportional to 2,168,587.74, 2,991,669.75 and 1,308,873.18
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Solution
The fourth proportional to 2,168,587.74, 2,991,669.75 and 1,308,873.18 is: 1,805,652.70
Step by Step Solution
- Step 1: Write the proportion equation
2,168,587.74 : 2,991,669.75 = 1,308,873.18 : x - Step 2: Convert to fraction form
2,168,587.74/2,991,669.75 = 1,308,873.18/x - Step 3: Cross multiply
2,168,587.74x = 2,991,669.75 × 1,308,873.18 - Step 4: Simplify right side
2,168,587.74x = 3,915,716,299,192.31 - Step 5: Solve for x
x = 3,915,716,299,192.31/2,168,587.74 - Step 6: Final answer
x = 1,805,652.70
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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.