Finding the Fourth Proportional to 977,056.21, 1,456,919.94 and 911,905.48
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Solution
The fourth proportional to 977,056.21, 1,456,919.94 and 911,905.48 is: 1,359,771.59
Step by Step Solution
- Step 1: Write the proportion equation
977,056.21 : 1,456,919.94 = 911,905.48 : x - Step 2: Convert to fraction form
977,056.21/1,456,919.94 = 911,905.48/x - Step 3: Cross multiply
977,056.21x = 1,456,919.94 × 911,905.48 - Step 4: Simplify right side
977,056.21x = 1,328,573,277,207.27 - Step 5: Solve for x
x = 1,328,573,277,207.27/977,056.21 - Step 6: Final answer
x = 1,359,771.59
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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.