Finding the Fourth Proportional to 2,115,477,070.79, 3,173,229,128.30 and 621,502,504.20
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Solution
The fourth proportional to 2,115,477,070.79, 3,173,229,128.30 and 621,502,504.20 is: 932,257,728.94
Step by Step Solution
- Step 1: Write the proportion equation
2,115,477,070.79 : 3,173,229,128.30 = 621,502,504.20 : x - Step 2: Convert to fraction form
2,115,477,070.79/3,173,229,128.30 = 621,502,504.20/x - Step 3: Cross multiply
2,115,477,070.79x = 3,173,229,128.30 × 621,502,504.20 - Step 4: Simplify right side
2,115,477,070.79x = 1,972,169,849,638,833,408 - Step 5: Solve for x
x = 1,972,169,849,638,833,408/2,115,477,070.79 - Step 6: Final answer
x = 932,257,728.94
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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.