Finding the Fourth Proportional to 561,652,421.80, 842,478,632.70 and 255,542,405.80
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Solution
The fourth proportional to 561,652,421.80, 842,478,632.70 and 255,542,405.80 is: 383,313,608.70
Step by Step Solution
- Step 1: Write the proportion equation
561,652,421.80 : 842,478,632.70 = 255,542,405.80 : x - Step 2: Convert to fraction form
561,652,421.80/842,478,632.70 = 255,542,405.80/x - Step 3: Cross multiply
561,652,421.80x = 842,478,632.70 × 255,542,405.80 - Step 4: Simplify right side
561,652,421.80x = 215,289,016,635,252,576 - Step 5: Solve for x
x = 215,289,016,635,252,576/561,652,421.80 - Step 6: Final answer
x = 383,313,608.70
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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.