Finding the Fourth Proportional to 1,317,649.68, 1,818,281.05 and 728,913.93
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Solution
The fourth proportional to 1,317,649.68, 1,818,281.05 and 728,913.93 is: 1,005,859.45
Step by Step Solution
- Step 1: Write the proportion equation
1,317,649.68 : 1,818,281.05 = 728,913.93 : x - Step 2: Convert to fraction form
1,317,649.68/1,818,281.05 = 728,913.93/x - Step 3: Cross multiply
1,317,649.68x = 1,818,281.05 × 728,913.93 - Step 4: Simplify right side
1,317,649.68x = 1,325,370,386,000.03 - Step 5: Solve for x
x = 1,325,370,386,000.03/1,317,649.68 - Step 6: Final answer
x = 1,005,859.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.