Finding the Fourth Proportional to 782,355.16, 1,079,653.68 and 442,889.08
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Solution
The fourth proportional to 782,355.16, 1,079,653.68 and 442,889.08 is: 611,188.95
Step by Step Solution
- Step 1: Write the proportion equation
782,355.16 : 1,079,653.68 = 442,889.08 : x - Step 2: Convert to fraction form
782,355.16/1,079,653.68 = 442,889.08/x - Step 3: Cross multiply
782,355.16x = 1,079,653.68 × 442,889.08 - Step 4: Simplify right side
782,355.16x = 478,166,825,053.81 - Step 5: Solve for x
x = 478,166,825,053.81/782,355.16 - Step 6: Final answer
x = 611,188.95
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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.