Finding the Fourth Proportional to 860,831.70, 1,291,197.74 and 328,406.55
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Solution
The fourth proportional to 860,831.70, 1,291,197.74 and 328,406.55 is: 492,590.82
Step by Step Solution
- Step 1: Write the proportion equation
860,831.70 : 1,291,197.74 = 328,406.55 : x - Step 2: Convert to fraction form
860,831.70/1,291,197.74 = 328,406.55/x - Step 3: Cross multiply
860,831.70x = 1,291,197.74 × 328,406.55 - Step 4: Simplify right side
860,831.70x = 424,037,793,519.16 - Step 5: Solve for x
x = 424,037,793,519.16/860,831.70 - Step 6: Final answer
x = 492,590.82
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.