Finding the Fourth Proportional to 980,192,461.20, 1,470,288,691.80 and 974,452,898.40
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Solution
The fourth proportional to 980,192,461.20, 1,470,288,691.80 and 974,452,898.40 is: 1,461,679,347.60
Step by Step Solution
- Step 1: Write the proportion equation
980,192,461.20 : 1,470,288,691.80 = 974,452,898.40 : x - Step 2: Convert to fraction form
980,192,461.20/1,470,288,691.80 = 974,452,898.40/x - Step 3: Cross multiply
980,192,461.20x = 1,470,288,691.80 × 974,452,898.40 - Step 4: Simplify right side
980,192,461.20x = 1,432,727,077,209,254,144 - Step 5: Solve for x
x = 1,432,727,077,209,254,144/980,192,461.20 - Step 6: Final answer
x = 1,461,679,347.60
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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.