Finding the Fourth Proportional to 2,130,643.16, 2,940,270.09 and 1,163,774.06
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Solution
The fourth proportional to 2,130,643.16, 2,940,270.09 and 1,163,774.06 is: 1,605,998.66
Step by Step Solution
- Step 1: Write the proportion equation
2,130,643.16 : 2,940,270.09 = 1,163,774.06 : x - Step 2: Convert to fraction form
2,130,643.16/2,940,270.09 = 1,163,774.06/x - Step 3: Cross multiply
2,130,643.16x = 2,940,270.09 × 1,163,774.06 - Step 4: Simplify right side
2,130,643.16x = 3,421,810,060,135.87 - Step 5: Solve for x
x = 3,421,810,060,135.87/2,130,643.16 - Step 6: Final answer
x = 1,605,998.66
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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.