Finding the Fourth Proportional to 1,122,159.87, 1,548,590.52 and 638,756.13
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Solution
The fourth proportional to 1,122,159.87, 1,548,590.52 and 638,756.13 is: 881,489.09
Step by Step Solution
- Step 1: Write the proportion equation
1,122,159.87 : 1,548,590.52 = 638,756.13 : x - Step 2: Convert to fraction form
1,122,159.87/1,548,590.52 = 638,756.13/x - Step 3: Cross multiply
1,122,159.87x = 1,548,590.52 × 638,756.13 - Step 4: Simplify right side
1,122,159.87x = 989,171,687,509.89 - Step 5: Solve for x
x = 989,171,687,509.89/1,122,159.87 - Step 6: Final answer
x = 881,489.09
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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.