Finding the Fourth Proportional to 6,390,943.81, 8,819,720.09 and 3,779,686.31
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Solution
The fourth proportional to 6,390,943.81, 8,819,720.09 and 3,779,686.31 is: 5,216,095.82
Step by Step Solution
- Step 1: Write the proportion equation
6,390,943.81 : 8,819,720.09 = 3,779,686.31 : x - Step 2: Convert to fraction form
6,390,943.81/8,819,720.09 = 3,779,686.31/x - Step 3: Cross multiply
6,390,943.81x = 8,819,720.09 × 3,779,686.31 - Step 4: Simplify right side
6,390,943.81x = 33,335,775,276,347.52 - Step 5: Solve for x
x = 33,335,775,276,347.52/6,390,943.81 - Step 6: Final answer
x = 5,216,095.82
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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.