Finding the Fourth Proportional to 1,394,165,414.40, 2,091,248,121.60 and 1,243,671,820.80
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Solution
The fourth proportional to 1,394,165,414.40, 2,091,248,121.60 and 1,243,671,820.80 is: 1,865,507,731.20
Step by Step Solution
- Step 1: Write the proportion equation
1,394,165,414.40 : 2,091,248,121.60 = 1,243,671,820.80 : x - Step 2: Convert to fraction form
1,394,165,414.40/2,091,248,121.60 = 1,243,671,820.80/x - Step 3: Cross multiply
1,394,165,414.40x = 2,091,248,121.60 × 1,243,671,820.80 - Step 4: Simplify right side
1,394,165,414.40x = 2,600,826,359,134,851,584 - Step 5: Solve for x
x = 2,600,826,359,134,851,584/1,394,165,414.40 - Step 6: Final answer
x = 1,865,507,731.20
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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.