Finding the Fourth Proportional to 1,115,335.93, 1,539,158.20 and 631,900.03
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Solution
The fourth proportional to 1,115,335.93, 1,539,158.20 and 631,900.03 is: 872,018.99
Step by Step Solution
- Step 1: Write the proportion equation
1,115,335.93 : 1,539,158.20 = 631,900.03 : x - Step 2: Convert to fraction form
1,115,335.93/1,539,158.20 = 631,900.03/x - Step 3: Cross multiply
1,115,335.93x = 1,539,158.20 × 631,900.03 - Step 4: Simplify right side
1,115,335.93x = 972,594,112,754.75 - Step 5: Solve for x
x = 972,594,112,754.75/1,115,335.93 - Step 6: Final answer
x = 872,018.99
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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.