Finding the Fourth Proportional to 7,242,406.70, 10,863,610.05 and 7,130,432.30
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Solution
The fourth proportional to 7,242,406.70, 10,863,610.05 and 7,130,432.30 is: 10,695,648.45
Step by Step Solution
- Step 1: Write the proportion equation
7,242,406.70 : 10,863,610.05 = 7,130,432.30 : x - Step 2: Convert to fraction form
7,242,406.70/10,863,610.05 = 7,130,432.30/x - Step 3: Cross multiply
7,242,406.70x = 10,863,610.05 × 7,130,432.30 - Step 4: Simplify right side
7,242,406.70x = 77,462,235,995,124.62 - Step 5: Solve for x
x = 77,462,235,995,124.62/7,242,406.70 - Step 6: Final answer
x = 10,695,648.45
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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.