Finding the Fourth Proportional to 1,138,177,413.76, 1,570,203,868.80 and 761,955,206.08
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Solution
The fourth proportional to 1,138,177,413.76, 1,570,203,868.80 and 761,955,206.08 is: 1,051,176,203.27
Step by Step Solution
- Step 1: Write the proportion equation
1,138,177,413.76 : 1,570,203,868.80 = 761,955,206.08 : x - Step 2: Convert to fraction form
1,138,177,413.76/1,570,203,868.80 = 761,955,206.08/x - Step 3: Cross multiply
1,138,177,413.76x = 1,570,203,868.80 × 761,955,206.08 - Step 4: Simplify right side
1,138,177,413.76x = 1,196,425,012,439,117,312 - Step 5: Solve for x
x = 1,196,425,012,439,117,312/1,138,177,413.76 - Step 6: Final answer
x = 1,051,176,203.27
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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.