Finding the Fourth Proportional to 989,615.70, 1,484,423.55 and 569,711.70
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Solution
The fourth proportional to 989,615.70, 1,484,423.55 and 569,711.70 is: 854,567.55
Step by Step Solution
- Step 1: Write the proportion equation
989,615.70 : 1,484,423.55 = 569,711.70 : x - Step 2: Convert to fraction form
989,615.70/1,484,423.55 = 569,711.70/x - Step 3: Cross multiply
989,615.70x = 1,484,423.55 × 569,711.70 - Step 4: Simplify right side
989,615.70x = 845,693,464,190.54 - Step 5: Solve for x
x = 845,693,464,190.54/989,615.70 - Step 6: Final answer
x = 854,567.55
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1.5x scale
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.