Finding the Fourth Proportional to 1,422,958.21, 1,963,656.53 and 778,372.76
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Solution
The fourth proportional to 1,422,958.21, 1,963,656.53 and 778,372.76 is: 1,074,140.30
Step by Step Solution
- Step 1: Write the proportion equation
1,422,958.21 : 1,963,656.53 = 778,372.76 : x - Step 2: Convert to fraction form
1,422,958.21/1,963,656.53 = 778,372.76/x - Step 3: Cross multiply
1,422,958.21x = 1,963,656.53 × 778,372.76 - Step 4: Simplify right side
1,422,958.21x = 1,528,456,752,948.12 - Step 5: Solve for x
x = 1,528,456,752,948.12/1,422,958.21 - Step 6: Final answer
x = 1,074,140.30
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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.