Finding the Fourth Proportional to 1,422,857.18, 1,963,558.35 and 778,263.20
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Solution
The fourth proportional to 1,422,857.18, 1,963,558.35 and 778,263.20 is: 1,074,011.66
Step by Step Solution
- Step 1: Write the proportion equation
1,422,857.18 : 1,963,558.35 = 778,263.20 : x - Step 2: Convert to fraction form
1,422,857.18/1,963,558.35 = 778,263.20/x - Step 3: Cross multiply
1,422,857.18x = 1,963,558.35 × 778,263.20 - Step 4: Simplify right side
1,422,857.18x = 1,528,165,204,857.72 - Step 5: Solve for x
x = 1,528,165,204,857.72/1,422,857.18 - Step 6: Final answer
x = 1,074,011.66
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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.