Finding the Fourth Proportional to 687,817.80, 1,031,726.70 and 617,833.80
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Solution
The fourth proportional to 687,817.80, 1,031,726.70 and 617,833.80 is: 926,750.70
Step by Step Solution
- Step 1: Write the proportion equation
687,817.80 : 1,031,726.70 = 617,833.80 : x - Step 2: Convert to fraction form
687,817.80/1,031,726.70 = 617,833.80/x - Step 3: Cross multiply
687,817.80x = 1,031,726.70 × 617,833.80 - Step 4: Simplify right side
687,817.80x = 637,435,627,622.46 - Step 5: Solve for x
x = 637,435,627,622.46/687,817.80 - Step 6: Final answer
x = 926,750.70
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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.