Finding the Fourth Proportional to 712,660.18, 983,436.11 and 390,371.71
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Solution
The fourth proportional to 712,660.18, 983,436.11 and 390,371.71 is: 538,693.82
Step by Step Solution
- Step 1: Write the proportion equation
712,660.18 : 983,436.11 = 390,371.71 : x - Step 2: Convert to fraction form
712,660.18/983,436.11 = 390,371.71/x - Step 3: Cross multiply
712,660.18x = 983,436.11 × 390,371.71 - Step 4: Simplify right side
712,660.18x = 383,905,633,984.59 - Step 5: Solve for x
x = 383,905,633,984.59/712,660.18 - Step 6: Final answer
x = 538,693.82
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1.5x scale
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.