Finding the Fourth Proportional to 1,122,622.17, 1,549,220.07 and 639,187.54
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Solution
The fourth proportional to 1,122,622.17, 1,549,220.07 and 639,187.54 is: 882,079.65
Step by Step Solution
- Step 1: Write the proportion equation
1,122,622.17 : 1,549,220.07 = 639,187.54 : x - Step 2: Convert to fraction form
1,122,622.17/1,549,220.07 = 639,187.54/x - Step 3: Cross multiply
1,122,622.17x = 1,549,220.07 × 639,187.54 - Step 4: Simplify right side
1,122,622.17x = 990,242,163,985.83 - Step 5: Solve for x
x = 990,242,163,985.83/1,122,622.17 - Step 6: Final answer
x = 882,079.65
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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.