Finding the Fourth Proportional to 1,638,138,876.70, 2,457,208,315.05 and 603,742,114.30
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Solution
The fourth proportional to 1,638,138,876.70, 2,457,208,315.05 and 603,742,114.30 is: 905,613,171.45
Step by Step Solution
- Step 1: Write the proportion equation
1,638,138,876.70 : 2,457,208,315.05 = 603,742,114.30 : x - Step 2: Convert to fraction form
1,638,138,876.70/2,457,208,315.05 = 603,742,114.30/x - Step 3: Cross multiply
1,638,138,876.70x = 2,457,208,315.05 × 603,742,114.30 - Step 4: Simplify right side
1,638,138,876.70x = 1,483,520,143,403,827,456 - Step 5: Solve for x
x = 1,483,520,143,403,827,456/1,638,138,876.70 - Step 6: Final answer
x = 905,613,171.45
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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.