Finding the Fourth Proportional to 712,790.47, 983,650.80 and 390,511.99
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Solution
The fourth proportional to 712,790.47, 983,650.80 and 390,511.99 is: 538,906.52
Step by Step Solution
- Step 1: Write the proportion equation
712,790.47 : 983,650.80 = 390,511.99 : x - Step 2: Convert to fraction form
712,790.47/983,650.80 = 390,511.99/x - Step 3: Cross multiply
712,790.47x = 983,650.80 × 390,511.99 - Step 4: Simplify right side
712,790.47x = 384,127,431,373.09 - Step 5: Solve for x
x = 384,127,431,373.09/712,790.47 - Step 6: Final answer
x = 538,906.52
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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.