Finding the Fourth Proportional to 1,112,166,125.20, 1,668,249,187.80 and 294,361,094.80
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Solution
The fourth proportional to 1,112,166,125.20, 1,668,249,187.80 and 294,361,094.80 is: 441,541,642.20
Step by Step Solution
- Step 1: Write the proportion equation
1,112,166,125.20 : 1,668,249,187.80 = 294,361,094.80 : x - Step 2: Convert to fraction form
1,112,166,125.20/1,668,249,187.80 = 294,361,094.80/x - Step 3: Cross multiply
1,112,166,125.20x = 1,668,249,187.80 × 294,361,094.80 - Step 4: Simplify right side
1,112,166,125.20x = 491,067,657,320,018,816 - Step 5: Solve for x
x = 491,067,657,320,018,816/1,112,166,125.20 - Step 6: Final answer
x = 441,541,642.20
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.