Finding the Fourth Proportional to 1,390,984.34, 1,919,751.66 and 1,005,048.08
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Solution
The fourth proportional to 1,390,984.34, 1,919,751.66 and 1,005,048.08 is: 1,387,106.00
Step by Step Solution
- Step 1: Write the proportion equation
1,390,984.34 : 1,919,751.66 = 1,005,048.08 : x - Step 2: Convert to fraction form
1,390,984.34/1,919,751.66 = 1,005,048.08/x - Step 3: Cross multiply
1,390,984.34x = 1,919,751.66 × 1,005,048.08 - Step 4: Simplify right side
1,390,984.34x = 1,929,442,719,959.81 - Step 5: Solve for x
x = 1,929,442,719,959.81/1,390,984.34 - Step 6: Final answer
x = 1,387,106.00
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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.