Finding the Fourth Proportional to 1,121,689,811.60, 1,682,534,717.40 and 930,586,835.60
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Solution
The fourth proportional to 1,121,689,811.60, 1,682,534,717.40 and 930,586,835.60 is: 1,395,880,253.40
Step by Step Solution
- Step 1: Write the proportion equation
1,121,689,811.60 : 1,682,534,717.40 = 930,586,835.60 : x - Step 2: Convert to fraction form
1,121,689,811.60/1,682,534,717.40 = 930,586,835.60/x - Step 3: Cross multiply
1,121,689,811.60x = 1,682,534,717.40 × 930,586,835.60 - Step 4: Simplify right side
1,121,689,811.60x = 1,565,744,658,452,406,272 - Step 5: Solve for x
x = 1,565,744,658,452,406,272/1,121,689,811.60 - Step 6: Final answer
x = 1,395,880,253.40
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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.