Finding the Fourth Proportional to 2,129,681.76, 2,938,938.57 and 1,162,809.06
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Solution
The fourth proportional to 2,129,681.76, 2,938,938.57 and 1,162,809.06 is: 1,604,664.35
Step by Step Solution
- Step 1: Write the proportion equation
2,129,681.76 : 2,938,938.57 = 1,162,809.06 : x - Step 2: Convert to fraction form
2,129,681.76/2,938,938.57 = 1,162,809.06/x - Step 3: Cross multiply
2,129,681.76x = 2,938,938.57 × 1,162,809.06 - Step 4: Simplify right side
2,129,681.76x = 3,417,424,395,979.44 - Step 5: Solve for x
x = 3,417,424,395,979.44/2,129,681.76 - Step 6: Final answer
x = 1,604,664.35
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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.