Finding the Fourth Proportional to 1,122,488.62, 1,549,035.74 and 639,053.74
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Solution
The fourth proportional to 1,122,488.62, 1,549,035.74 and 639,053.74 is: 881,894.98
Step by Step Solution
- Step 1: Write the proportion equation
1,122,488.62 : 1,549,035.74 = 639,053.74 : x - Step 2: Convert to fraction form
1,122,488.62/1,549,035.74 = 639,053.74/x - Step 3: Cross multiply
1,122,488.62x = 1,549,035.74 × 639,053.74 - Step 4: Simplify right side
1,122,488.62x = 989,917,077,861.27 - Step 5: Solve for x
x = 989,917,077,861.27/1,122,488.62 - Step 6: Final answer
x = 881,894.98
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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.