Finding the Fourth Proportional to 684,365.21, 944,430.11 and 378,462.18
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Solution
The fourth proportional to 684,365.21, 944,430.11 and 378,462.18 is: 522,281.19
Step by Step Solution
- Step 1: Write the proportion equation
684,365.21 : 944,430.11 = 378,462.18 : x - Step 2: Convert to fraction form
684,365.21/944,430.11 = 378,462.18/x - Step 3: Cross multiply
684,365.21x = 944,430.11 × 378,462.18 - Step 4: Simplify right side
684,365.21x = 357,431,076,395.93 - Step 5: Solve for x
x = 357,431,076,395.93/684,365.21 - Step 6: Final answer
x = 522,281.19
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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.