Finding the Fourth Proportional to 660,317.28, 911,237.79 and 358,511.28
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Solution
The fourth proportional to 660,317.28, 911,237.79 and 358,511.28 is: 494,745.54
Step by Step Solution
- Step 1: Write the proportion equation
660,317.28 : 911,237.79 = 358,511.28 : x - Step 2: Convert to fraction form
660,317.28/911,237.79 = 358,511.28/x - Step 3: Cross multiply
660,317.28x = 911,237.79 × 358,511.28 - Step 4: Simplify right side
660,317.28x = 326,689,026,477.27 - Step 5: Solve for x
x = 326,689,026,477.27/660,317.28 - Step 6: Final answer
x = 494,745.54
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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.