Finding the Fourth Proportional to 1,386,817.47, 1,913,238.23 and 842,865.62
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Solution
The fourth proportional to 1,386,817.47, 1,913,238.23 and 842,865.62 is: 1,162,808.19
Step by Step Solution
- Step 1: Write the proportion equation
1,386,817.47 : 1,913,238.23 = 842,865.62 : x - Step 2: Convert to fraction form
1,386,817.47/1,913,238.23 = 842,865.62/x - Step 3: Cross multiply
1,386,817.47x = 1,913,238.23 × 842,865.62 - Step 4: Simplify right side
1,386,817.47x = 1,612,602,713,156.13 - Step 5: Solve for x
x = 1,612,602,713,156.13/1,386,817.47 - Step 6: Final answer
x = 1,162,808.19
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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.