Finding the Fourth Proportional to 1,386,378.65, 1,913,292.33 and 774,534.71
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Solution
The fourth proportional to 1,386,378.65, 1,913,292.33 and 774,534.71 is: 1,068,908.06
Step by Step Solution
- Step 1: Write the proportion equation
1,386,378.65 : 1,913,292.33 = 774,534.71 : x - Step 2: Convert to fraction form
1,386,378.65/1,913,292.33 = 774,534.71/x - Step 3: Cross multiply
1,386,378.65x = 1,913,292.33 × 774,534.71 - Step 4: Simplify right side
1,386,378.65x = 1,481,911,311,078.23 - Step 5: Solve for x
x = 1,481,911,311,078.23/1,386,378.65 - Step 6: Final answer
x = 1,068,908.06
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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.