Finding the Fourth Proportional to 989,025.20, 1,364,911.98 and 553,438.75
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Solution
The fourth proportional to 989,025.20, 1,364,911.98 and 553,438.75 is: 763,777.48
Step by Step Solution
- Step 1: Write the proportion equation
989,025.20 : 1,364,911.98 = 553,438.75 : x - Step 2: Convert to fraction form
989,025.20/1,364,911.98 = 553,438.75/x - Step 3: Cross multiply
989,025.20x = 1,364,911.98 × 553,438.75 - Step 4: Simplify right side
989,025.20x = 755,395,173,246.67 - Step 5: Solve for x
x = 755,395,173,246.67/989,025.20 - Step 6: Final answer
x = 763,777.48
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.