Finding the Fourth Proportional to 1,422,803.18, 1,963,454.10 and 778,235.96
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Solution
The fourth proportional to 1,422,803.18, 1,963,454.10 and 778,235.96 is: 1,073,957.81
Step by Step Solution
- Step 1: Write the proportion equation
1,422,803.18 : 1,963,454.10 = 778,235.96 : x - Step 2: Convert to fraction form
1,422,803.18/1,963,454.10 = 778,235.96/x - Step 3: Cross multiply
1,422,803.18x = 1,963,454.10 × 778,235.96 - Step 4: Simplify right side
1,422,803.18x = 1,528,030,586,429.44 - Step 5: Solve for x
x = 1,528,030,586,429.44/1,422,803.18 - Step 6: Final answer
x = 1,073,957.81
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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.