Finding the Fourth Proportional to 1,354,930.79, 1,869,669.74 and 782,155.49
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Solution
The fourth proportional to 1,354,930.79, 1,869,669.74 and 782,155.49 is: 1,079,296.78
Step by Step Solution
- Step 1: Write the proportion equation
1,354,930.79 : 1,869,669.74 = 782,155.49 : x - Step 2: Convert to fraction form
1,354,930.79/1,869,669.74 = 782,155.49/x - Step 3: Cross multiply
1,354,930.79x = 1,869,669.74 × 782,155.49 - Step 4: Simplify right side
1,354,930.79x = 1,462,372,438,368.75 - Step 5: Solve for x
x = 1,462,372,438,368.75/1,354,930.79 - Step 6: Final answer
x = 1,079,296.78
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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.