Finding the Fourth Proportional to 779,908.70, 1,168,113.45 and 639,940.70
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Solution
The fourth proportional to 779,908.70, 1,168,113.45 and 639,940.70 is: 958,475.45
Step by Step Solution
- Step 1: Write the proportion equation
779,908.70 : 1,168,113.45 = 639,940.70 : x - Step 2: Convert to fraction form
779,908.70/1,168,113.45 = 639,940.70/x - Step 3: Cross multiply
779,908.70x = 1,168,113.45 × 639,940.70 - Step 4: Simplify right side
779,908.70x = 747,523,338,872.42 - Step 5: Solve for x
x = 747,523,338,872.42/779,908.70 - Step 6: Final answer
x = 958,475.45
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.