Finding the Fourth Proportional to 1,347,991,991.40, 2,021,987,987.10 and 530,130,973.80
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Solution
The fourth proportional to 1,347,991,991.40, 2,021,987,987.10 and 530,130,973.80 is: 795,196,460.70
Step by Step Solution
- Step 1: Write the proportion equation
1,347,991,991.40 : 2,021,987,987.10 = 530,130,973.80 : x - Step 2: Convert to fraction form
1,347,991,991.40/2,021,987,987.10 = 530,130,973.80/x - Step 3: Cross multiply
1,347,991,991.40x = 2,021,987,987.10 × 530,130,973.80 - Step 4: Simplify right side
1,347,991,991.40x = 1,071,918,460,613,224,832 - Step 5: Solve for x
x = 1,071,918,460,613,224,832/1,347,991,991.40 - Step 6: Final answer
x = 795,196,460.70
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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.