Finding the Fourth Proportional to 447,553,481.20, 671,330,221.80 and 326,621,129.20
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Solution
The fourth proportional to 447,553,481.20, 671,330,221.80 and 326,621,129.20 is: 489,931,693.80
Step by Step Solution
- Step 1: Write the proportion equation
447,553,481.20 : 671,330,221.80 = 326,621,129.20 : x - Step 2: Convert to fraction form
447,553,481.20/671,330,221.80 = 326,621,129.20/x - Step 3: Cross multiply
447,553,481.20x = 671,330,221.80 × 326,621,129.20 - Step 4: Simplify right side
447,553,481.20x = 219,270,635,110,402,432 - Step 5: Solve for x
x = 219,270,635,110,402,432/447,553,481.20 - Step 6: Final answer
x = 489,931,693.80
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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.