Finding the Fourth Proportional to 1,209,413.68, 1,668,432.46 and 779,831.80
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Solution
The fourth proportional to 1,209,413.68, 1,668,432.46 and 779,831.80 is: 1,075,807.81
Step by Step Solution
- Step 1: Write the proportion equation
1,209,413.68 : 1,668,432.46 = 779,831.80 : x - Step 2: Convert to fraction form
1,209,413.68/1,668,432.46 = 779,831.80/x - Step 3: Cross multiply
1,209,413.68x = 1,668,432.46 × 779,831.80 - Step 4: Simplify right side
1,209,413.68x = 1,301,096,688,460.23 - Step 5: Solve for x
x = 1,301,096,688,460.23/1,209,413.68 - Step 6: Final answer
x = 1,075,807.81
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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.