Finding the Fourth Proportional to 862,312.79, 1,190,028.42 and 480,339.74
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Solution
The fourth proportional to 862,312.79, 1,190,028.42 and 480,339.74 is: 662,889.32
Step by Step Solution
- Step 1: Write the proportion equation
862,312.79 : 1,190,028.42 = 480,339.74 : x - Step 2: Convert to fraction form
862,312.79/1,190,028.42 = 480,339.74/x - Step 3: Cross multiply
862,312.79x = 1,190,028.42 × 480,339.74 - Step 4: Simplify right side
862,312.79x = 571,617,935,905.27 - Step 5: Solve for x
x = 571,617,935,905.27/862,312.79 - Step 6: Final answer
x = 662,889.32
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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.