Finding the Fourth Proportional to 997,272,021.20, 1,495,908,031.80 and 664,377,378.80
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Solution
The fourth proportional to 997,272,021.20, 1,495,908,031.80 and 664,377,378.80 is: 996,566,068.20
Step by Step Solution
- Step 1: Write the proportion equation
997,272,021.20 : 1,495,908,031.80 = 664,377,378.80 : x - Step 2: Convert to fraction form
997,272,021.20/1,495,908,031.80 = 664,377,378.80/x - Step 3: Cross multiply
997,272,021.20x = 1,495,908,031.80 × 664,377,378.80 - Step 4: Simplify right side
997,272,021.20x = 993,847,457,093,150,976 - Step 5: Solve for x
x = 993,847,457,093,150,976/997,272,021.20 - Step 6: Final answer
x = 996,566,068.20
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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.