Finding the Fourth Proportional to 2,153,615.99, 2,972,009.99 and 1,186,780.88
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Solution
The fourth proportional to 2,153,615.99, 2,972,009.99 and 1,186,780.88 is: 1,637,768.59
Step by Step Solution
- Step 1: Write the proportion equation
2,153,615.99 : 2,972,009.99 = 1,186,780.88 : x - Step 2: Convert to fraction form
2,153,615.99/2,972,009.99 = 1,186,780.88/x - Step 3: Cross multiply
2,153,615.99x = 2,972,009.99 × 1,186,780.88 - Step 4: Simplify right side
2,153,615.99x = 3,527,124,631,300.99 - Step 5: Solve for x
x = 3,527,124,631,300.99/2,153,615.99 - Step 6: Final answer
x = 1,637,768.59
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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.