Finding the Fourth Proportional to 1,159,763,520.48, 1,600,473,919.32 and 638,242,752.48
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Solution
The fourth proportional to 1,159,763,520.48, 1,600,473,919.32 and 638,242,752.48 is: 880,775,142.09
Step by Step Solution
- Step 1: Write the proportion equation
1,159,763,520.48 : 1,600,473,919.32 = 638,242,752.48 : x - Step 2: Convert to fraction form
1,159,763,520.48/1,600,473,919.32 = 638,242,752.48/x - Step 3: Cross multiply
1,159,763,520.48x = 1,600,473,919.32 × 638,242,752.48 - Step 4: Simplify right side
1,159,763,520.48x = 1,021,490,879,539,250,176 - Step 5: Solve for x
x = 1,021,490,879,539,250,176/1,159,763,520.48 - Step 6: Final answer
x = 880,775,142.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.