Finding the Fourth Proportional to 1,419,291,276.80, 2,128,936,915.20 and 1,400,180,979.20
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Solution
The fourth proportional to 1,419,291,276.80, 2,128,936,915.20 and 1,400,180,979.20 is: 2,100,271,468.80
Step by Step Solution
- Step 1: Write the proportion equation
1,419,291,276.80 : 2,128,936,915.20 = 1,400,180,979.20 : x - Step 2: Convert to fraction form
1,419,291,276.80/2,128,936,915.20 = 1,400,180,979.20/x - Step 3: Cross multiply
1,419,291,276.80x = 2,128,936,915.20 × 1,400,180,979.20 - Step 4: Simplify right side
1,419,291,276.80x = 2,980,896,974,579,763,712 - Step 5: Solve for x
x = 2,980,896,974,579,763,712/1,419,291,276.80 - Step 6: Final answer
x = 2,100,271,468.80
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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.