Finding the Fourth Proportional to 769,555.74, 1,148,698.06 and 678,654.91
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Solution
The fourth proportional to 769,555.74, 1,148,698.06 and 678,654.91 is: 1,013,012.49
Step by Step Solution
- Step 1: Write the proportion equation
769,555.74 : 1,148,698.06 = 678,654.91 : x - Step 2: Convert to fraction form
769,555.74/1,148,698.06 = 678,654.91/x - Step 3: Cross multiply
769,555.74x = 1,148,698.06 × 678,654.91 - Step 4: Simplify right side
769,555.74x = 779,569,578,526.48 - Step 5: Solve for x
x = 779,569,578,526.48/769,555.74 - Step 6: Final answer
x = 1,013,012.49
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.