Finding the Fourth Proportional to 712,395.74, 983,111.24 and 390,135.58
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Solution
The fourth proportional to 712,395.74, 983,111.24 and 390,135.58 is: 538,389.90
Step by Step Solution
- Step 1: Write the proportion equation
712,395.74 : 983,111.24 = 390,135.58 : x - Step 2: Convert to fraction form
712,395.74/983,111.24 = 390,135.58/x - Step 3: Cross multiply
712,395.74x = 983,111.24 × 390,135.58 - Step 4: Simplify right side
712,395.74x = 383,546,673,821.92 - Step 5: Solve for x
x = 383,546,673,821.92/712,395.74 - Step 6: Final answer
x = 538,389.90
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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.