Finding the Fourth Proportional to 7,387,907.20, 11,081,860.80 and 4,553,555.20
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Solution
The fourth proportional to 7,387,907.20, 11,081,860.80 and 4,553,555.20 is: 6,830,332.80
Step by Step Solution
- Step 1: Write the proportion equation
7,387,907.20 : 11,081,860.80 = 4,553,555.20 : x - Step 2: Convert to fraction form
7,387,907.20/11,081,860.80 = 4,553,555.20/x - Step 3: Cross multiply
7,387,907.20x = 11,081,860.80 × 4,553,555.20 - Step 4: Simplify right side
7,387,907.20x = 50,461,864,871,516.16 - Step 5: Solve for x
x = 50,461,864,871,516.16/7,387,907.20 - Step 6: Final answer
x = 6,830,332.80
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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.