Finding the Fourth Proportional to 2,128,430.61, 2,937,302.96 and 1,210,636.17
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Solution
The fourth proportional to 2,128,430.61, 2,937,302.96 and 1,210,636.17 is: 1,670,717.00
Step by Step Solution
- Step 1: Write the proportion equation
2,128,430.61 : 2,937,302.96 = 1,210,636.17 : x - Step 2: Convert to fraction form
2,128,430.61/2,937,302.96 = 1,210,636.17/x - Step 3: Cross multiply
2,128,430.61x = 2,937,302.96 × 1,210,636.17 - Step 4: Simplify right side
2,128,430.61x = 3,556,005,199,570.88 - Step 5: Solve for x
x = 3,556,005,199,570.88/2,128,430.61 - Step 6: Final answer
x = 1,670,717.00
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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.