Finding the Fourth Proportional to 1,391,347.94, 1,920,263.04 and 779,542.14
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Solution
The fourth proportional to 1,391,347.94, 1,920,263.04 and 779,542.14 is: 1,075,881.82
Step by Step Solution
- Step 1: Write the proportion equation
1,391,347.94 : 1,920,263.04 = 779,542.14 : x - Step 2: Convert to fraction form
1,391,347.94/1,920,263.04 = 779,542.14/x - Step 3: Cross multiply
1,391,347.94x = 1,920,263.04 × 779,542.14 - Step 4: Simplify right side
1,391,347.94x = 1,496,925,959,564.51 - Step 5: Solve for x
x = 1,496,925,959,564.51/1,391,347.94 - Step 6: Final answer
x = 1,075,881.82
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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.