Finding the Fourth Proportional to 712,791.47, 983,652.18 and 390,512.99
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Solution
The fourth proportional to 712,791.47, 983,652.18 and 390,512.99 is: 538,907.90
Step by Step Solution
- Step 1: Write the proportion equation
712,791.47 : 983,652.18 = 390,512.99 : x - Step 2: Convert to fraction form
712,791.47/983,652.18 = 390,512.99/x - Step 3: Cross multiply
712,791.47x = 983,652.18 × 390,512.99 - Step 4: Simplify right side
712,791.47x = 384,128,953,931.82 - Step 5: Solve for x
x = 384,128,953,931.82/712,791.47 - Step 6: Final answer
x = 538,907.90
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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.