Finding the Fourth Proportional to 1,122,873.60, 1,549,653.84 and 639,459.12
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Solution
The fourth proportional to 1,122,873.60, 1,549,653.84 and 639,459.12 is: 882,503.86
Step by Step Solution
- Step 1: Write the proportion equation
1,122,873.60 : 1,549,653.84 = 639,459.12 : x - Step 2: Convert to fraction form
1,122,873.60/1,549,653.84 = 639,459.12/x - Step 3: Cross multiply
1,122,873.60x = 1,549,653.84 × 639,459.12 - Step 4: Simplify right side
1,122,873.60x = 990,940,280,831.02 - Step 5: Solve for x
x = 990,940,280,831.02/1,122,873.60 - Step 6: Final answer
x = 882,503.86
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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.