Finding the Fourth Proportional to 1,386,216, 1,912,983.84 and 750,312
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Solution
The fourth proportional to 1,386,216, 1,912,983.84 and 750,312 is: 1,035,433.68
Step by Step Solution
- Step 1: Write the proportion equation
1,386,216 : 1,912,983.84 = 750,312 : x - Step 2: Convert to fraction form
1,386,216/1,912,983.84 = 750,312/x - Step 3: Cross multiply
1,386,216x = 1,912,983.84 × 750,312 - Step 4: Simplify right side
1,386,216x = 1,435,334,730,958.08 - Step 5: Solve for x
x = 1,435,334,730,958.08/1,386,216 - Step 6: Final answer
x = 1,035,433.68
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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.