Finding the Fourth Proportional to 2,128,405.68, 2,937,264.66 and 1,210,767.80
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Solution
The fourth proportional to 2,128,405.68, 2,937,264.66 and 1,210,767.80 is: 1,670,896.43
Step by Step Solution
- Step 1: Write the proportion equation
2,128,405.68 : 2,937,264.66 = 1,210,767.80 : x - Step 2: Convert to fraction form
2,128,405.68/2,937,264.66 = 1,210,767.80/x - Step 3: Cross multiply
2,128,405.68x = 2,937,264.66 × 1,210,767.80 - Step 4: Simplify right side
2,128,405.68x = 3,556,345,455,719.62 - Step 5: Solve for x
x = 3,556,345,455,719.62/2,128,405.68 - Step 6: Final answer
x = 1,670,896.43
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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.