Finding the Fourth Proportional to 665,963,135.20, 998,944,702.80 and 282,960,920.80
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Solution
The fourth proportional to 665,963,135.20, 998,944,702.80 and 282,960,920.80 is: 424,441,381.20
Step by Step Solution
- Step 1: Write the proportion equation
665,963,135.20 : 998,944,702.80 = 282,960,920.80 : x - Step 2: Convert to fraction form
665,963,135.20/998,944,702.80 = 282,960,920.80/x - Step 3: Cross multiply
665,963,135.20x = 998,944,702.80 × 282,960,920.80 - Step 4: Simplify right side
665,963,135.20x = 282,662,312,932,570,336 - Step 5: Solve for x
x = 282,662,312,932,570,336/665,963,135.20 - Step 6: Final answer
x = 424,441,381.20
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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.