Finding the Fourth Proportional to 1,219,133.10, 1,828,787.31 and 420,403.14
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Solution
The fourth proportional to 1,219,133.10, 1,828,787.31 and 420,403.14 is: 630,634.94
Step by Step Solution
- Step 1: Write the proportion equation
1,219,133.10 : 1,828,787.31 = 420,403.14 : x - Step 2: Convert to fraction form
1,219,133.10/1,828,787.31 = 420,403.14/x - Step 3: Cross multiply
1,219,133.10x = 1,828,787.31 × 420,403.14 - Step 4: Simplify right side
1,219,133.10x = 768,827,927,516.15 - Step 5: Solve for x
x = 768,827,927,516.15/1,219,133.10 - Step 6: Final answer
x = 630,634.94
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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.