Finding the Fourth Proportional to 1,235,402,771.42, 1,853,102,592.21 and 315,279,130.70
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Solution
The fourth proportional to 1,235,402,771.42, 1,853,102,592.21 and 315,279,130.70 is: 472,918,296.67
Step by Step Solution
- Step 1: Write the proportion equation
1,235,402,771.42 : 1,853,102,592.21 = 315,279,130.70 : x - Step 2: Convert to fraction form
1,235,402,771.42/1,853,102,592.21 = 315,279,130.70/x - Step 3: Cross multiply
1,235,402,771.42x = 1,853,102,592.21 × 315,279,130.70 - Step 4: Simplify right side
1,235,402,771.42x = 584,244,574,360,619,904 - Step 5: Solve for x
x = 584,244,574,360,619,904/1,235,402,771.42 - Step 6: Final answer
x = 472,918,296.67
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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.