Finding the Fourth Proportional to 819,385.12, 1,130,755.98 and 456,831.64
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Solution
The fourth proportional to 819,385.12, 1,130,755.98 and 456,831.64 is: 630,430.18
Step by Step Solution
- Step 1: Write the proportion equation
819,385.12 : 1,130,755.98 = 456,831.64 : x - Step 2: Convert to fraction form
819,385.12/1,130,755.98 = 456,831.64/x - Step 3: Cross multiply
819,385.12x = 1,130,755.98 × 456,831.64 - Step 4: Simplify right side
819,385.12x = 516,565,108,783.21 - Step 5: Solve for x
x = 516,565,108,783.21/819,385.12 - Step 6: Final answer
x = 630,430.18
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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.