Finding the Fourth Proportional to 1,225,089.69, 1,690,374.79 and 715,693.65
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Solution
The fourth proportional to 1,225,089.69, 1,690,374.79 and 715,693.65 is: 987,511.78
Step by Step Solution
- Step 1: Write the proportion equation
1,225,089.69 : 1,690,374.79 = 715,693.65 : x - Step 2: Convert to fraction form
1,225,089.69/1,690,374.79 = 715,693.65/x - Step 3: Cross multiply
1,225,089.69x = 1,690,374.79 × 715,693.65 - Step 4: Simplify right side
1,225,089.69x = 1,209,790,503,323.08 - Step 5: Solve for x
x = 1,209,790,503,323.08/1,225,089.69 - Step 6: Final answer
x = 987,511.78
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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.