Finding the Fourth Proportional to 719,078.13, 992,298.81 and 396,784.05
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Solution
The fourth proportional to 719,078.13, 992,298.81 and 396,784.05 is: 547,545.98
Step by Step Solution
- Step 1: Write the proportion equation
719,078.13 : 992,298.81 = 396,784.05 : x - Step 2: Convert to fraction form
719,078.13/992,298.81 = 396,784.05/x - Step 3: Cross multiply
719,078.13x = 992,298.81 × 396,784.05 - Step 4: Simplify right side
719,078.13x = 393,728,340,641.98 - Step 5: Solve for x
x = 393,728,340,641.98/719,078.13 - Step 6: Final answer
x = 547,545.98
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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.