Finding the Fourth Proportional to 1,438,670.94, 1,985,413.98 and 785,335.70
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Solution
The fourth proportional to 1,438,670.94, 1,985,413.98 and 785,335.70 is: 1,083,789.52
Step by Step Solution
- Step 1: Write the proportion equation
1,438,670.94 : 1,985,413.98 = 785,335.70 : x - Step 2: Convert to fraction form
1,438,670.94/1,985,413.98 = 785,335.70/x - Step 3: Cross multiply
1,438,670.94x = 1,985,413.98 × 785,335.70 - Step 4: Simplify right side
1,438,670.94x = 1,559,216,485,681.63 - Step 5: Solve for x
x = 1,559,216,485,681.63/1,438,670.94 - Step 6: Final answer
x = 1,083,789.52
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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.