Finding the Fourth Proportional to 689,871.62, 1,034,807.71 and 310,349.05
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Solution
The fourth proportional to 689,871.62, 1,034,807.71 and 310,349.05 is: 465,523.71
Step by Step Solution
- Step 1: Write the proportion equation
689,871.62 : 1,034,807.71 = 310,349.05 : x - Step 2: Convert to fraction form
689,871.62/1,034,807.71 = 310,349.05/x - Step 3: Cross multiply
689,871.62x = 1,034,807.71 × 310,349.05 - Step 4: Simplify right side
689,871.62x = 321,151,593,643.84 - Step 5: Solve for x
x = 321,151,593,643.84/689,871.62 - Step 6: Final answer
x = 465,523.71
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.