Finding the Fourth Proportional to 1,239,136.42, 1,858,283.65 and 429,331.81
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Solution
The fourth proportional to 1,239,136.42, 1,858,283.65 and 429,331.81 is: 643,851.86
Step by Step Solution
- Step 1: Write the proportion equation
1,239,136.42 : 1,858,283.65 = 429,331.81 : x - Step 2: Convert to fraction form
1,239,136.42/1,858,283.65 = 429,331.81/x - Step 3: Cross multiply
1,239,136.42x = 1,858,283.65 × 429,331.81 - Step 4: Simplify right side
1,239,136.42x = 797,820,282,947.91 - Step 5: Solve for x
x = 797,820,282,947.91/1,239,136.42 - Step 6: Final answer
x = 643,851.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.