Finding the Fourth Proportional to 1,292,913.09, 1,939,368.42 and 346,257.99
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Solution
The fourth proportional to 1,292,913.09, 1,939,368.42 and 346,257.99 is: 519,386.66
Step by Step Solution
- Step 1: Write the proportion equation
1,292,913.09 : 1,939,368.42 = 346,257.99 : x - Step 2: Convert to fraction form
1,292,913.09/1,939,368.42 = 346,257.99/x - Step 3: Cross multiply
1,292,913.09x = 1,939,368.42 × 346,257.99 - Step 4: Simplify right side
1,292,913.09x = 671,521,810,978.68 - Step 5: Solve for x
x = 671,521,810,978.68/1,292,913.09 - Step 6: Final answer
x = 519,386.66
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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.