Finding the Fourth Proportional to 782,356.16, 1,079,655.06 and 442,890.08
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Solution
The fourth proportional to 782,356.16, 1,079,655.06 and 442,890.08 is: 611,190.33
Step by Step Solution
- Step 1: Write the proportion equation
782,356.16 : 1,079,655.06 = 442,890.08 : x - Step 2: Convert to fraction form
782,356.16/1,079,655.06 = 442,890.08/x - Step 3: Cross multiply
782,356.16x = 1,079,655.06 × 442,890.08 - Step 4: Simplify right side
782,356.16x = 478,168,515,895.81 - Step 5: Solve for x
x = 478,168,515,895.81/782,356.16 - Step 6: Final answer
x = 611,190.33
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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.