Finding the Fourth Proportional to 879,903.21, 1,214,259.35 and 477,495.21
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Solution
The fourth proportional to 879,903.21, 1,214,259.35 and 477,495.21 is: 658,939.55
Step by Step Solution
- Step 1: Write the proportion equation
879,903.21 : 1,214,259.35 = 477,495.21 : x - Step 2: Convert to fraction form
879,903.21/1,214,259.35 = 477,495.21/x - Step 3: Cross multiply
879,903.21x = 1,214,259.35 × 477,495.21 - Step 4: Simplify right side
879,903.21x = 579,803,020,935.24 - Step 5: Solve for x
x = 579,803,020,935.24/879,903.21 - Step 6: Final answer
x = 658,939.55
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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.