Finding the Fourth Proportional to 1,860,248,923.20, 2,790,373,384.80 and 930,439,749.60
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Solution
The fourth proportional to 1,860,248,923.20, 2,790,373,384.80 and 930,439,749.60 is: 1,395,659,624.40
Step by Step Solution
- Step 1: Write the proportion equation
1,860,248,923.20 : 2,790,373,384.80 = 930,439,749.60 : x - Step 2: Convert to fraction form
1,860,248,923.20/2,790,373,384.80 = 930,439,749.60/x - Step 3: Cross multiply
1,860,248,923.20x = 2,790,373,384.80 × 930,439,749.60 - Step 4: Simplify right side
1,860,248,923.20x = 2,596,274,313,443,816,448 - Step 5: Solve for x
x = 2,596,274,313,443,816,448/1,860,248,923.20 - Step 6: Final answer
x = 1,395,659,624.40
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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.