Finding the Fourth Proportional to 1,347,991,878.40, 2,021,987,817.60 and 530,130,860.80
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Solution
The fourth proportional to 1,347,991,878.40, 2,021,987,817.60 and 530,130,860.80 is: 795,196,291.20
Step by Step Solution
- Step 1: Write the proportion equation
1,347,991,878.40 : 2,021,987,817.60 = 530,130,860.80 : x - Step 2: Convert to fraction form
1,347,991,878.40/2,021,987,817.60 = 530,130,860.80/x - Step 3: Cross multiply
1,347,991,878.40x = 2,021,987,817.60 × 530,130,860.80 - Step 4: Simplify right side
1,347,991,878.40x = 1,071,918,142,271,401,344 - Step 5: Solve for x
x = 1,071,918,142,271,401,344/1,347,991,878.40 - Step 6: Final answer
x = 795,196,291.20
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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.