Finding the Fourth Proportional to 712,497.09, 983,235.96 and 390,207.11
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Solution
The fourth proportional to 712,497.09, 983,235.96 and 390,207.11 is: 538,480.32
Step by Step Solution
- Step 1: Write the proportion equation
712,497.09 : 983,235.96 = 390,207.11 : x - Step 2: Convert to fraction form
712,497.09/983,235.96 = 390,207.11/x - Step 3: Cross multiply
712,497.09x = 983,235.96 × 390,207.11 - Step 4: Simplify right side
712,497.09x = 383,665,657,483.50 - Step 5: Solve for x
x = 383,665,657,483.50/712,497.09 - Step 6: Final answer
x = 538,480.32
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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.