Finding the Fourth Proportional to 497,173,348.76, 685,979,239.30 and 320,923,598.18
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Solution
The fourth proportional to 497,173,348.76, 685,979,239.30 and 320,923,598.18 is: 442,797,117.54
Step by Step Solution
- Step 1: Write the proportion equation
497,173,348.76 : 685,979,239.30 = 320,923,598.18 : x - Step 2: Convert to fraction form
497,173,348.76/685,979,239.30 = 320,923,598.18/x - Step 3: Cross multiply
497,173,348.76x = 685,979,239.30 × 320,923,598.18 - Step 4: Simplify right side
497,173,348.76x = 220,146,925,748,703,072 - Step 5: Solve for x
x = 220,146,925,748,703,072/497,173,348.76 - Step 6: Final answer
x = 442,797,117.54
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.