Finding the Fourth Proportional to 1,209,194,886.17, 1,668,635,268.58 and 673,374,189.03
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Solution
The fourth proportional to 1,209,194,886.17, 1,668,635,268.58 and 673,374,189.03 is: 929,226,490.80
Step by Step Solution
- Step 1: Write the proportion equation
1,209,194,886.17 : 1,668,635,268.58 = 673,374,189.03 : x - Step 2: Convert to fraction form
1,209,194,886.17/1,668,635,268.58 = 673,374,189.03/x - Step 3: Cross multiply
1,209,194,886.17x = 1,668,635,268.58 × 673,374,189.03 - Step 4: Simplify right side
1,209,194,886.17x = 1,123,615,920,765,728,000 - Step 5: Solve for x
x = 1,123,615,920,765,728,000/1,209,194,886.17 - Step 6: Final answer
x = 929,226,490.80
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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.