Finding the Fourth Proportional to 3,939,283.06, 5,436,210.64 and 2,128,447.06
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Solution
The fourth proportional to 3,939,283.06, 5,436,210.64 and 2,128,447.06 is: 2,937,256.95
Step by Step Solution
- Step 1: Write the proportion equation
3,939,283.06 : 5,436,210.64 = 2,128,447.06 : x - Step 2: Convert to fraction form
3,939,283.06/5,436,210.64 = 2,128,447.06/x - Step 3: Cross multiply
3,939,283.06x = 5,436,210.64 × 2,128,447.06 - Step 4: Simplify right side
3,939,283.06x = 11,570,686,554,248.72 - Step 5: Solve for x
x = 11,570,686,554,248.72/3,939,283.06 - Step 6: Final answer
x = 2,937,256.95
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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.