Finding the Fourth Proportional to 708,588,901.20, 1,062,883,351.80 and 684,780,344.40
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Solution
The fourth proportional to 708,588,901.20, 1,062,883,351.80 and 684,780,344.40 is: 1,027,170,516.60
Step by Step Solution
- Step 1: Write the proportion equation
708,588,901.20 : 1,062,883,351.80 = 684,780,344.40 : x - Step 2: Convert to fraction form
708,588,901.20/1,062,883,351.80 = 684,780,344.40/x - Step 3: Cross multiply
708,588,901.20x = 1,062,883,351.80 × 684,780,344.40 - Step 4: Simplify right side
708,588,901.20x = 727,841,627,702,630,272 - Step 5: Solve for x
x = 727,841,627,702,630,272/708,588,901.20 - Step 6: Final answer
x = 1,027,170,516.60
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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.