Finding the Fourth Proportional to 6,643,013.28, 9,167,386.40 and 3,742,438.88
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Solution
The fourth proportional to 6,643,013.28, 9,167,386.40 and 3,742,438.88 is: 5,164,581.47
Step by Step Solution
- Step 1: Write the proportion equation
6,643,013.28 : 9,167,386.40 = 3,742,438.88 : x - Step 2: Convert to fraction form
6,643,013.28/9,167,386.40 = 3,742,438.88/x - Step 3: Cross multiply
6,643,013.28x = 9,167,386.40 × 3,742,438.88 - Step 4: Simplify right side
6,643,013.28x = 34,308,383,291,343.23 - Step 5: Solve for x
x = 34,308,383,291,343.23/6,643,013.28 - Step 6: Final answer
x = 5,164,581.47
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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.