Finding the Fourth Proportional to 1,058,221,536.16, 1,587,394,079.70 and 321,315,480.12
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Solution
The fourth proportional to 1,058,221,536.16, 1,587,394,079.70 and 321,315,480.12 is: 481,991,977.51
Step by Step Solution
- Step 1: Write the proportion equation
1,058,221,536.16 : 1,587,394,079.70 = 321,315,480.12 : x - Step 2: Convert to fraction form
1,058,221,536.16/1,587,394,079.70 = 321,315,480.12/x - Step 3: Cross multiply
1,058,221,536.16x = 1,587,394,079.70 × 321,315,480.12 - Step 4: Simplify right side
1,058,221,536.16x = 510,054,290,858,451,072 - Step 5: Solve for x
x = 510,054,290,858,451,072/1,058,221,536.16 - Step 6: Final answer
x = 481,991,977.51
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Double scale
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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.