Finding the Fourth Proportional to 741,528,209.70, 1,112,292,314.55 and 431,166,665.70
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Solution
The fourth proportional to 741,528,209.70, 1,112,292,314.55 and 431,166,665.70 is: 646,749,998.55
Step by Step Solution
- Step 1: Write the proportion equation
741,528,209.70 : 1,112,292,314.55 = 431,166,665.70 : x - Step 2: Convert to fraction form
741,528,209.70/1,112,292,314.55 = 431,166,665.70/x - Step 3: Cross multiply
741,528,209.70x = 1,112,292,314.55 × 431,166,665.70 - Step 4: Simplify right side
741,528,209.70x = 479,583,368,548,259,072 - Step 5: Solve for x
x = 479,583,368,548,259,072/741,528,209.70 - Step 6: Final answer
x = 646,749,998.55
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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.