Finding the Fourth Proportional to 1,281,656.94, 1,768,681.89 and 722,806.95
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Solution
The fourth proportional to 1,281,656.94, 1,768,681.89 and 722,806.95 is: 997,470.95
Step by Step Solution
- Step 1: Write the proportion equation
1,281,656.94 : 1,768,681.89 = 722,806.95 : x - Step 2: Convert to fraction form
1,281,656.94/1,768,681.89 = 722,806.95/x - Step 3: Cross multiply
1,281,656.94x = 1,768,681.89 × 722,806.95 - Step 4: Simplify right side
1,281,656.94x = 1,278,415,562,431.14 - Step 5: Solve for x
x = 1,278,415,562,431.14/1,281,656.94 - Step 6: Final answer
x = 997,470.95
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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.