Finding the Fourth Proportional to 1,007,919.75, 1,390,929.27 and 555,210.75
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Solution
The fourth proportional to 1,007,919.75, 1,390,929.27 and 555,210.75 is: 766,190.84
Step by Step Solution
- Step 1: Write the proportion equation
1,007,919.75 : 1,390,929.27 = 555,210.75 : x - Step 2: Convert to fraction form
1,007,919.75/1,390,929.27 = 555,210.75/x - Step 3: Cross multiply
1,007,919.75x = 1,390,929.27 × 555,210.75 - Step 4: Simplify right side
1,007,919.75x = 772,258,883,193.65 - Step 5: Solve for x
x = 772,258,883,193.65/1,007,919.75 - Step 6: Final answer
x = 766,190.84
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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.