Finding the Fourth Proportional to 1,087,509.13, 1,500,564.74 and 628,455.46
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Solution
The fourth proportional to 1,087,509.13, 1,500,564.74 and 628,455.46 is: 867,154.19
Step by Step Solution
- Step 1: Write the proportion equation
1,087,509.13 : 1,500,564.74 = 628,455.46 : x - Step 2: Convert to fraction form
1,087,509.13/1,500,564.74 = 628,455.46/x - Step 3: Cross multiply
1,087,509.13x = 1,500,564.74 × 628,455.46 - Step 4: Simplify right side
1,087,509.13x = 943,038,100,794.20 - Step 5: Solve for x
x = 943,038,100,794.20/1,087,509.13 - Step 6: Final answer
x = 867,154.19
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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.