Finding the Fourth Proportional to 1,190,583,950.48, 1,643,097,880.67 and 714,292,243.79
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Solution
The fourth proportional to 1,190,583,950.48, 1,643,097,880.67 and 714,292,243.79 is: 985,778,509.35
Step by Step Solution
- Step 1: Write the proportion equation
1,190,583,950.48 : 1,643,097,880.67 = 714,292,243.79 : x - Step 2: Convert to fraction form
1,190,583,950.48/1,643,097,880.67 = 714,292,243.79/x - Step 3: Cross multiply
1,190,583,950.48x = 1,643,097,880.67 × 714,292,243.79 - Step 4: Simplify right side
1,190,583,950.48x = 1,173,652,071,950,904,320 - Step 5: Solve for x
x = 1,173,652,071,950,904,320/1,190,583,950.48 - Step 6: Final answer
x = 985,778,509.35
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1.5x scale
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.