Finding the Fourth Proportional to 1,153,125,838.10, 1,591,293,988.74 and 624,485,528.66
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Solution
The fourth proportional to 1,153,125,838.10, 1,591,293,988.74 and 624,485,528.66 is: 861,779,378.26
Step by Step Solution
- Step 1: Write the proportion equation
1,153,125,838.10 : 1,591,293,988.74 = 624,485,528.66 : x - Step 2: Convert to fraction form
1,153,125,838.10/1,591,293,988.74 = 624,485,528.66/x - Step 3: Cross multiply
1,153,125,838.10x = 1,591,293,988.74 × 624,485,528.66 - Step 4: Simplify right side
1,153,125,838.10x = 993,740,067,811,778,944 - Step 5: Solve for x
x = 993,740,067,811,778,944/1,153,125,838.10 - Step 6: Final answer
x = 861,779,378.26
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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.